| 1 |
- "use strict";function Compressor(l,e){if(!(this instanceof Compressor))return new Compressor(l,e);TreeTransformer.call(this,this.before,this.after),this.options=defaults(l,{arrows:!e,booleans:!e,collapse_vars:!e,comparisons:!e,computed_props:!e,conditionals:!e,dead_code:!e,drop_console:!1,drop_debugger:!e,ecma:5,evaluate:!e,expression:!1,global_defs:{},hoist_funs:!1,hoist_props:!e,hoist_vars:!1,ie8:!1,if_return:!e,inline:!e,join_vars:!e,keep_classnames:!1,keep_fargs:!0,keep_fnames:!1,keep_infinity:!1,loops:!e,negate_iife:!e,passes:1,properties:!e,pure_getters:!e&&"strict",pure_funcs:null,reduce_funcs:!e,reduce_vars:!e,sequences:!e,side_effects:!e,switches:!e,top_retain:null,toplevel:!!(l&&l.top_retain),typeofs:!e,unsafe:!1,unsafe_arrows:!1,unsafe_comps:!1,unsafe_Function:!1,unsafe_math:!1,unsafe_methods:!1,unsafe_proto:!1,unsafe_regexp:!1,unsafe_undefined:!1,unused:!e,warnings:!1},!0);var t=this.options.global_defs;if("object"==typeof t)for(var o in t)/^@/.test(o)&&HOP(t,o)&&(t[o.slice(1)]=parse(t[o],{expression:!0}));!0===this.options.inline&&(this.options.inline=3);var i=this.options.pure_funcs;this.pure_funcs="function"==typeof i?i:i?function(t){return 0>i.indexOf(t.expression.print_to_string())}:return_true;var n=this.options.top_retain;n instanceof RegExp?this.top_retain=function(t){return n.test(t.name)}:"function"==typeof n?this.top_retain=n:n&&("string"==typeof n&&(n=n.split(/,/)),this.top_retain=function(t){return 0<=n.indexOf(t.name)});var r=this.options.toplevel;this.toplevel="string"==typeof r?{funcs:/funcs/.test(r),vars:/vars/.test(r)}:{funcs:r,vars:r};var a=this.options.sequences;this.sequences_limit=1==a?800:0|a,this.warnings_produced={}}Compressor.prototype=new TreeTransformer,merge(Compressor.prototype,{option:function(t){return this.options[t]},exposed:function(n){if(n.export)return!0;if(n.global)for(var e=0,t=n.orig.length;e<t;e++)if(!this.toplevel[n.orig[e]instanceof AST_SymbolDefun?"funcs":"vars"])return!0;return!1},in_boolean_context:function(){if(!this.option("booleans"))return!1;for(var n,e=this.self(),t=0;n=this.parent(t);t++){if(n instanceof AST_SimpleStatement||n instanceof AST_Conditional&&n.condition===e||n instanceof AST_DWLoop&&n.condition===e||n instanceof AST_For&&n.condition===e||n instanceof AST_If&&n.condition===e||n instanceof AST_UnaryPrefix&&"!"==n.operator&&n.expression===e)return!0;if(n instanceof AST_Binary&&("&&"==n.operator||"||"==n.operator)||n instanceof AST_Conditional||n.tail_node()===e)e=n;else return!1}},compress:function(s){this.option("expression")&&s.process_expression(!0);for(var e=+this.options.passes||1,t=1/0,o=!1,i={ie8:this.option("ie8")},n=0;n<e;n++)if(s.figure_out_scope(i),(0<n||this.option("reduce_vars"))&&s.reset_opt_flags(this),s=s.transform(this),1<e){var r=0;if(s.walk(new TreeWalker(function(){r++})),this.info("pass "+n+": last_count: "+t+", count: "+r),r<t)t=r,o=!1;else if(o)break;else o=!0}return this.option("expression")&&s.process_expression(!1),s},info:function(){"verbose"==this.options.warnings&&AST_Node.warn.apply(AST_Node,arguments)},warn:function(n,e){if(this.options.warnings){var t=string_template(n,e);t in this.warnings_produced||(this.warnings_produced[t]=!0,AST_Node.warn.apply(AST_Node,arguments))}},clear_warnings:function(){this.warnings_produced={}},before:function(n,e){if(n._squeezed)return n;var t=!1;n instanceof AST_Scope&&(n=n.hoist_properties(this),n=n.hoist_declarations(this),t=!0),e(n,this),e(n,this);var o=n.optimize(this);return t&&o instanceof AST_Scope&&(o.drop_unused(this),e(o,this)),o===n&&(o._squeezed=!0),o}}),function(){function G(o,n){o.DEFMETHOD("optimize",function(t){var e=this;if(e._optimized)return e;if(t.has_directive("use asm"))return e;var o=n(e,t);return o._optimized=!0,o})}function $(t){return t instanceof AST_Arrow||t instanceof AST_Function}function t(o){if(o instanceof AST_This)return!0;if(o instanceof AST_SymbolRef)return o.definition().orig[0]instanceof AST_SymbolLambda;if(o instanceof AST_PropAccess){if(o=o.expression,o instanceof AST_SymbolRef){if(o.is_immutable())return!1;o=o.fixed_value()}return!o||!(o instanceof AST_RegExp)&&(!!(o instanceof AST_Constant)||t(o))}return!1}function Q(i,e){if(!(i instanceof AST_SymbolRef))return!1;for(var t=i.definition().orig,o=t.length;0<=--o;)if(t[o]instanceof e)return!0}function X(i,e){for(var t,o=0;(t=i.parent(o++))&&!(t instanceof AST_Scope);)if(t instanceof AST_Catch){t=t.argname.definition().scope;break}return t.find_variable(e)}function te(n,e,t){return t||(t={}),e&&(!t.start&&(t.start=e.start),!t.end&&(t.end=e.end)),new n(t)}function W(o,e){return 1==e.length?e[0]:te(AST_Sequence,o,{expressions:e.reduce(a,[])})}function r(o,e){switch(typeof o){case"string":return te(AST_String,e,{value:o});case"number":return isNaN(o)?te(AST_NaN,e):isFinite(o)?0>1/o?te(AST_UnaryPrefix,e,{operator:"-",expression:te(AST_Number,e,{value:-o})}):te(AST_Number,e,{value:o}):0>o?te(AST_UnaryPrefix,e,{operator:"-",expression:te(AST_Infinity,e)}):te(AST_Infinity,e);case"boolean":return te(o?AST_True:AST_False,e);case"undefined":return te(AST_Undefined,e);default:if(null===o)return te(AST_Null,e,{value:null});if(o instanceof RegExp)return te(AST_RegExp,e,{value:o});throw new Error(string_template("Can't handle constant of type: {type}",{type:typeof o}));}}function J(n,e,t){return n instanceof AST_UnaryPrefix&&"delete"==n.operator||n instanceof AST_Call&&n.expression===e&&(t instanceof AST_PropAccess||t instanceof AST_SymbolRef&&"eval"==t.name)?W(e,[te(AST_Number,e,{value:0}),t]):t}function a(o,e){return e instanceof AST_Sequence?o.push.apply(o,e.expressions):o.push(e),o}function n(t){if(null===t)return[];if(t instanceof AST_BlockStatement)return t.body;if(t instanceof AST_EmptyStatement)return[];if(t instanceof AST_Statement)return[t];throw new Error("Can't convert thing to statement array")}function s(t){return null===t||!!(t instanceof AST_EmptyStatement)||!!(t instanceof AST_BlockStatement)&&0==t.body.length}function l(t){return!(t instanceof AST_DefClass||t instanceof AST_Defun||t instanceof AST_Let||t instanceof AST_Const||t instanceof AST_Export||t instanceof AST_Import)}function p(t){return t instanceof AST_IterationStatement?t.body instanceof AST_BlockStatement?t.body:t:t}function f(t){return"Call"==t.TYPE&&(t.expression instanceof AST_Function||f(t.expression))}function oe(t){return t instanceof AST_SymbolRef&&t.definition().undeclared}function d(t){return t instanceof AST_Infinity||t instanceof AST_NaN||t instanceof AST_Undefined}function i(o,e){function i(r,h){function n(n){if(n instanceof AST_Scope)return n;if(n instanceof AST_Switch){n.expression=n.expression.transform(E);for(var e,t=0,o=n.body.length;!V&&t<o;t++)if(e=n.body[t],e instanceof AST_Case){if(!S){if(e!==z[k])continue;k++}if(e.expression=e.expression.transform(E),C||!N)break}return V=!0,n}}function l(l,e,p){var o=!1,i=!(l instanceof AST_Arrow);return e.walk(new TreeWalker(function(e,t){if(o)return!0;if(e instanceof AST_SymbolRef&&l.variables.has(e.name)){var n=e.definition().scope;if(n!==x)for(;n=n.parent_scope;)if(n===x)return!0;return o=!0}if((p||i)&&e instanceof AST_This)return o=!0;if(e instanceof AST_Scope&&!(e instanceof AST_Arrow)){var r=i;return i=!1,t(),i=r,!0}})),o}function e(){var t,n=h.self();if($(n)&&!n.name&&!n.uses_arguments&&!n.uses_eval&&(t=h.parent())instanceof AST_Call&&t.expression===n&&all(t.args,function(t){return!(t instanceof AST_Expansion)})){var o=h.has_directive("use strict");o&&!member(o,n.body)&&(o=!1);var e=n.argnames.length;m=t.args.slice(e);for(var r=Object.create(null),a=e;0<=--a;){var s=n.argnames[a],i=t.args[a];if(m.unshift(te(AST_VarDef,s,{name:s,value:i})),!(s.name in r))if(r[s.name]=!0,s instanceof AST_Expansion){var p=t.args.slice(a);all(p,function(t){return!l(n,t,o)})&&v.unshift([te(AST_VarDef,s,{name:s.expression,value:te(AST_Array,t,{elements:p})})])}else i?l(n,i,o)&&(i=null):i=te(AST_Undefined,s).transform(h),i&&v.unshift([te(AST_VarDef,s,{name:s,value:i})])}}}function o(t){z.push(t),t instanceof AST_Assign?(!t.left.has_side_effects(h)&&v.push(z.slice()),o(t.right)):t instanceof AST_Binary?(o(t.left),o(t.right)):t instanceof AST_Call?(o(t.expression),t.args.forEach(o)):t instanceof AST_Case?o(t.expression):t instanceof AST_Conditional?(o(t.condition),o(t.consequent),o(t.alternative)):t instanceof AST_Definitions&&(h.option("unused")||!(t instanceof AST_Const))?t.definitions.forEach(o):t instanceof AST_DWLoop?(o(t.condition),!(t.body instanceof AST_Block)&&o(t.body)):t instanceof AST_Exit?t.value&&o(t.value):t instanceof AST_For?(t.init&&o(t.init),t.condition&&o(t.condition),t.step&&o(t.step),!(t.body instanceof AST_Block)&&o(t.body)):t instanceof AST_ForIn?(o(t.object),!(t.body instanceof AST_Block)&&o(t.body)):t instanceof AST_If?(o(t.condition),!(t.body instanceof AST_Block)&&o(t.body),t.alternative&&!(t.alternative instanceof AST_Block)&&o(t.alternative)):t instanceof AST_Sequence?t.expressions.forEach(o):t instanceof AST_SimpleStatement?o(t.body):t instanceof AST_Switch?(o(t.expression),t.body.forEach(o)):t instanceof AST_Unary?("++"==t.operator||"--"==t.operator)&&v.push(z.slice()):t instanceof AST_VarDef&&t.value&&(v.push(z.slice()),o(t.value)),z.pop()}function a(n,e,t){var o=E.parent(e);return o instanceof AST_Assign?t&&!(o.left instanceof AST_PropAccess||o.left.name in H)?a(o,e+1,t):n:o instanceof AST_Binary?t&&(!O(o.operator)||o.left===n)?a(o,e+1,t):n:o instanceof AST_Call?n:o instanceof AST_Case?n:o instanceof AST_Conditional?t&&o.condition===n?a(o,e+1,t):n:o instanceof AST_Definitions?a(o,e+1,!0):o instanceof AST_Exit?t?a(o,e+1,t):n:o instanceof AST_If?t&&o.condition===n?a(o,e+1,t):n:o instanceof AST_IterationStatement?n:o instanceof AST_Sequence?a(o,e+1,o.tail_node()!==n):o instanceof AST_SimpleStatement?a(o,e+1,!0):o instanceof AST_Switch?n:o instanceof AST_VarDef?n:null}function i(n){var e=n.value;if(e instanceof AST_SymbolRef&&"arguments"!=e.name){var t=e.definition();return t.undeclared?void 0:q=t}}function s(n){if(n instanceof AST_VarDef&&n.name instanceof AST_SymbolDeclaration){var e=n.name.definition();if(!member(n.name,e.orig))return;var t=e.orig.length-e.eliminated,o=e.references.length-e.replaced;if(1<t&&!(n.name instanceof AST_SymbolFunarg)||(1<o?i(n):!h.exposed(e)))return te(AST_SymbolRef,n.name,n.name)}else{var r=n[n instanceof AST_Assign?"left":"expression"];return!Q(r,AST_SymbolConst)&&r}}function p(t){return t[t instanceof AST_Assign?"right":"value"]}function f(n){var r=Object.create(null);if(n instanceof AST_Unary)return r;var t=new TreeWalker(function(o){for(var e=o;e instanceof AST_PropAccess;)e=e.expression;(e instanceof AST_SymbolRef||e instanceof AST_This)&&(r[e.name]=r[e.name]||Z(o,t.parent()))});return p(n).walk(t),r}function c(n){if(n.name instanceof AST_SymbolFunarg){var e=h.parent(),t=h.self().argnames,o=t.indexOf(n.name);if(0>o)e.args.length=z(e.args.length,t.length-1);else{var i=e.args;i[o]&&(i[o]=te(AST_Number,i[o],{value:0}))}return!0}var a=!1;return r[b].transform(new TreeTransformer(function(t,e,o){return a?t:t===n||t.body===n?(a=!0,t instanceof AST_VarDef?(t.value=null,t):o?MAP.skip:null):void 0},function(t){if(t instanceof AST_Sequence)switch(t.expressions.length){case 0:return null;case 1:return t.expressions[0];}}))}function _(t){return!(t instanceof AST_Unary)&&p(t).has_side_effects(h)}function u(o){var e=o.definition();return!(1==e.orig.length&&e.orig[0]instanceof AST_SymbolDefun)&&(e.scope.get_defun_scope()!==x||!all(e.references,function(t){return t.scope.get_defun_scope()===x}))}function g(o,e){if(o instanceof AST_Assign)return g(o.left,!0);if(o instanceof AST_Unary)return g(o.expression,!0);if(o instanceof AST_VarDef)return o.value&&g(o.value);if(e){if(o instanceof AST_Dot)return g(o.expression,!0);if(o instanceof AST_Sub)return g(o.expression,!0);if(o instanceof AST_SymbolRef)return o.definition().scope!==x}return!1}if(x.uses_eval||x.uses_with)return r;for(var m,v=[],y=h.self()instanceof AST_Try,b=r.length,E=new TreeTransformer(function(r){if(V)return r;if(!S)return r===z[k]?(k++,k<z.length)?n(r):(S=!0,T=a(r,0),T===r&&(V=!0),r):r;var e=E.parent();if(r instanceof AST_Assign&&"="!=r.operator&&M.equivalent_to(r.left)||r instanceof AST_Await||r instanceof AST_Call&&M instanceof AST_PropAccess&&M.equivalent_to(r.expression)||r instanceof AST_Debugger||r instanceof AST_Destructuring||r instanceof AST_IterationStatement&&!(r instanceof AST_For)||r instanceof AST_LoopControl||r instanceof AST_Try||r instanceof AST_With||e instanceof AST_For&&r!==e.init||(C||!N)&&r instanceof AST_SymbolRef&&!r.is_declared(h))return V=!0,r;if(!F&&(C||!N)&&(e instanceof AST_Binary&&O(e.operator)&&e.left!==r||e instanceof AST_Conditional&&e.condition!==r||e instanceof AST_If&&e.condition!==r)&&(F=e),Y&&!(r instanceof AST_SymbolDeclaration)&&M.equivalent_to(r)){if(F)return V=!0,r;if(Z(r,e))return q&&A++,r;if(w=V=!0,A++,h.info("Collapsing {name} [{file}:{line},{col}]",{name:r.print_to_string(),file:r.start.file,line:r.start.line,col:r.start.col}),D instanceof AST_UnaryPostfix)return te(AST_UnaryPrefix,D,D);if(D instanceof AST_VarDef){if(q)return V=!1,r;var t=D.name.definition(),o=D.value;return 1!=t.references.length-t.replaced||h.exposed(t)?te(AST_Assign,D,{operator:"=",left:te(AST_SymbolRef,D.name,D.name),right:o}):(t.replaced++,P&&d(o)?o.transform(h):J(e,r,o))}return D.write_only=!1,D}var i;return(r instanceof AST_Call||r instanceof AST_Exit&&(C||M instanceof AST_PropAccess||u(M))||r instanceof AST_PropAccess&&(C||r.expression.may_throw_on_access(h))||r instanceof AST_SymbolRef&&(H[r.name]||C&&u(r))||r instanceof AST_VarDef&&r.value&&((r.name.name in H)||C&&u(r.name))||(i=Z(r.left,r))&&(i instanceof AST_PropAccess||(i.name in H))||R&&(y?r.has_side_effects(h):g(r)))&&(T=r,r instanceof AST_Scope&&(V=!0)),n(r)},function(t){V||(T===t&&(V=!0),F===t&&(F=null))}),w=new TreeTransformer(function(t){return V?t:S?t instanceof AST_SymbolRef&&t.name==I.name?(--A||(V=!0),Z(t,w.parent()))?t:(I.replaced++,q.replaced--,D.value):t instanceof AST_Default||t instanceof AST_Scope?t:void 0:t===z[k]?(k++,k<z.length)?void 0:(S=!0,t):t});0<=--b;){0==b&&h.option("unused")&&e();var z=[];for(o(r[b]);0<v.length;){z=v.pop();var k=0,D=z[z.length-1],q=null,T=null,F=null,M=s(D);if(!(!M||t(M)||M.has_side_effects(h))){var H=f(D);M instanceof AST_SymbolRef&&(H[M.name]=!1);var N=q;if(!N&&M instanceof AST_SymbolRef){var I=M.definition();I.references.length-I.replaced==(D instanceof AST_VarDef?1:2)&&(N=!0)}var C=_(D),R=D.may_throw(h),P=D.name instanceof AST_SymbolFunarg,S=P,V=!1,A=0,Y=!m||!S;if(!Y){for(var U=h.self().argnames.lastIndexOf(D.name)+1;!V&&U<m.length;U++)m[U].transform(E);Y=!0}for(var B=b;!V&&B<r.length;B++)r[B].transform(E);if(q){var I=D.name.definition();if(V&&I.references.length-I.replaced>A)A=!1;else{V=!1,k=0,S=P;for(var B=b;!V&&B<r.length;B++)r[B].transform(w);q.single_use=!1}}A&&!c(D)&&r.splice(b,1)}}}}function r(i){for(var e,t=[],o=0;o<i.length;)e=i[o],e instanceof AST_BlockStatement&&all(e.body,l)?(w=!0,r(e.body),[].splice.apply(i,[o,1].concat(e.body)),o+=e.body.length):e instanceof AST_EmptyStatement?(w=!0,i.splice(o,1)):e instanceof AST_Directive?0>t.indexOf(e.value)?(o++,t.push(e.value)):(w=!0,i.splice(o,1)):o++}function s(d,e){function t(i){for(var e,t=0,o=i.length;0<=--o;)if(e=i[o],e instanceof AST_If&&e.body instanceof AST_Return&&1<++t)return!0;return!1}function z(t){return!t||t instanceof AST_UnaryPrefix&&"void"==t.operator}function o(t){if(!t)return!1;for(var o,n=g+1,i=d.length;n<i;n++)if(o=d[n],o instanceof AST_Const||o instanceof AST_Let)return!1;var r=t instanceof AST_LoopControl?e.loopcontrol_target(t):null;return t instanceof AST_Return&&u&&z(t.value)||t instanceof AST_Continue&&f===p(r)||t instanceof AST_Break&&r instanceof AST_BlockStatement&&f===r}function r(){var e=d.slice(g+1);return d.length=g+1,e.filter(function(e){return!(e instanceof AST_Defun)||(d.push(e),!1)})}function a(i,e){var t=n(i).slice(0,-1);return e.value&&t.push(te(AST_SimpleStatement,e.value,{body:e.value.expression})),t}function s(e){for(var t,o=e+1,i=d.length;o<i&&(t=d[o],!!(t instanceof AST_Var&&_(t)));o++);return o}function l(e){for(var t,o=e;0<=--o&&(t=d[o],!!(t instanceof AST_Var&&_(t))););return o}for(var f=e.self(),c=t(d),u=f instanceof AST_Lambda,g=d.length;0<=--g;){var h=d[g],i=s(g),y=d[i];if(u&&!y&&h instanceof AST_Return){if(!h.value){w=!0,d.splice(g,1);continue}if(h.value instanceof AST_UnaryPrefix&&"void"==h.value.operator){w=!0,d[g]=te(AST_SimpleStatement,h,{body:h.value.expression});continue}}if(h instanceof AST_If){var v=m(h.body);if(o(v)){v.label&&remove(v.label.thedef.references,v),w=!0,h=h.clone(),h.condition=h.condition.negate(e);var b=a(h.body,v);h.body=te(AST_BlockStatement,h,{body:n(h.alternative).concat(r())}),h.alternative=te(AST_BlockStatement,h,{body:b}),d[g]=h.transform(e);continue}var v=m(h.alternative);if(o(v)){v.label&&remove(v.label.thedef.references,v),w=!0,h=h.clone(),h.body=te(AST_BlockStatement,h.body,{body:n(h.body).concat(r())});var b=a(h.alternative,v);h.alternative=te(AST_BlockStatement,h.alternative,{body:b}),d[g]=h.transform(e);continue}}if(h instanceof AST_If&&h.body instanceof AST_Return){var x=h.body.value;if(!x&&!h.alternative&&(u&&!y||y instanceof AST_Return&&!y.value)){w=!0,d[g]=te(AST_SimpleStatement,h.condition,{body:h.condition});continue}if(x&&!h.alternative&&y instanceof AST_Return&&y.value){w=!0,h=h.clone(),h.alternative=y,d.splice(g,1,h.transform(e)),d.splice(i,1);continue}if(x&&!h.alternative&&(!y&&u&&c||y instanceof 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e=["!","delete"],t=["in","instanceof","==","!=","===","!==","<","<=",">=",">"];n(AST_Node,return_false),n(AST_UnaryPrefix,function(){return member(this.operator,e)}),n(AST_Binary,function(){return member(this.operator,t)||O(this.operator)&&this.left.is_boolean()&&this.right.is_boolean()}),n(AST_Conditional,function(){return this.consequent.is_boolean()&&this.alternative.is_boolean()}),n(AST_Assign,function(){return"="==this.operator&&this.right.is_boolean()}),n(AST_Sequence,function(){return this.tail_node().is_boolean()}),n(AST_True,return_true),n(AST_False,return_true)}(function(o,e){o.DEFMETHOD("is_boolean",e)}),function(n){n(AST_Node,return_false),n(AST_Number,return_true);var e=makePredicate("+ - ~ ++ --");n(AST_Unary,function(){return e(this.operator)});var t=makePredicate("- * / % & | ^ << >> >>>");n(AST_Binary,function(o){return t(this.operator)||"+"==this.operator&&this.left.is_number(o)&&this.right.is_number(o)}),n(AST_Assign,function(o){return t(this.operator.slice(0,-1))||"="==this.operator&&this.right.is_number(o)}),n(AST_Sequence,function(t){return this.tail_node().is_number(t)}),n(AST_Conditional,function(t){return this.consequent.is_number(t)&&this.alternative.is_number(t)})}(function(o,e){o.DEFMETHOD("is_number",e)}),function(t){t(AST_Node,return_false),t(AST_String,return_true),t(AST_TemplateString,function(){return 1===this.segments.length}),t(AST_UnaryPrefix,function(){return"typeof"==this.operator}),t(AST_Binary,function(t){return"+"==this.operator&&(this.left.is_string(t)||this.right.is_string(t))}),t(AST_Assign,function(t){return("="==this.operator||"+="==this.operator)&&this.right.is_string(t)}),t(AST_Sequence,function(t){return this.tail_node().is_string(t)}),t(AST_Conditional,function(t){return this.consequent.is_string(t)&&this.alternative.is_string(t)})}(function(o,e){o.DEFMETHOD("is_string",e)});var O=makePredicate("&& ||"),q=makePredicate("delete ++ --");(function(o){function s(t,a){if(t instanceof AST_Node)return te(t.CTOR,a,t);if(Array.isArray(t))return te(AST_Array,a,{elements:t.map(function(t){return s(t,a)})});if(t&&"object"==typeof t){var e=[];for(var o in t)HOP(t,o)&&e.push(te(AST_ObjectKeyVal,a,{key:o,value:s(t[o],a)}));return te(AST_Object,a,{properties:e})}return r(t,a)}AST_Node.DEFMETHOD("resolve_defines",function(r){if(r.option("global_defs")){var e=this._find_defs(r,"");if(e){var t,o=this,i=0;do t=o,o=r.parent(i++);while(o instanceof AST_PropAccess&&o.expression===t);if(Z(t,o))r.warn("global_defs "+this.print_to_string()+" redefined [{file}:{line},{col}]",this.start);else return e}}}),o(AST_Node,noop),o(AST_Dot,function(o,e){return this.expression._find_defs(o,"."+this.property+e)}),o(AST_SymbolRef,function(t,e){if(this.global()){var o,i=t.option("global_defs");if(i&&HOP(i,o=this.name+e)){var n=s(i[o],this),r=t.find_parent(AST_Toplevel);return n.walk(new TreeWalker(function(t){t instanceof AST_SymbolRef&&(t.scope=r,t.thedef=r.def_global(t))})),n}}})})(function(o,e){o.DEFMETHOD("_find_defs",e)});var T=["constructor","toString","valueOf"],F={Array:["indexOf","join","lastIndexOf","slice"].concat(T),Boolean:T,Number:["toExponential","toFixed","toPrecision"].concat(T),Object:T,RegExp:["test"].concat(T),String:["charAt","charCodeAt","concat","indexOf","italics","lastIndexOf","match","replace","search","slice","split","substr","substring","toLowerCase","toUpperCase","trim"].concat(T)};h(F);var M={Array:["isArray"],Math:["abs","acos","asin","atan","ceil","cos","exp","floor","log","round","sin","sqrt","tan","atan2","pow","max","min"],Number:["isFinite","isNaN"],Object:["create","getOwnPropertyDescriptor","getOwnPropertyNames","getPrototypeOf","isExtensible","isFrozen","isSealed","keys"],String:["fromCharCode"]};h(M),function(n){AST_Node.DEFMETHOD("evaluate",function(o){if(!o.option("evaluate"))return this;var e=this._eval(o,1);return!e||e instanceof RegExp||"object"!=typeof 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this;var i=t.key;if(i instanceof AST_Symbol)i=i.name;else if(i instanceof AST_Node&&(i=i._eval(s,e),i===t.key))return this;if("function"==typeof Object.prototype[i])return this;if(!(t.value instanceof AST_Function)&&(o[i]=t.value._eval(s,e),o[i]===t.value))return this}return o}return this}),n(AST_UnaryPrefix,function(e,t){var o=this.expression;if(e.option("typeofs")&&"typeof"==this.operator&&(o instanceof AST_Lambda||o instanceof AST_SymbolRef&&o.fixed_value()instanceof AST_Lambda))return"function";if(o=o._eval(e,t),o===this.expression)return this;switch(this.operator){case"!":return!o;case"typeof":return o instanceof RegExp?this:typeof o;case"void":return;case"~":return~o;case"-":return-o;case"+":return+o;}return this}),n(AST_Binary,function(r,e){var t=this.left._eval(r,e);if(t===this.left)return this;var o=this.right._eval(r,e);if(o===this.right)return this;var i;switch(this.operator){case"&&":i=t&&o;break;case"||":i=t||o;break;case"|":i=t|o;break;case"&":i=t&o;break;case"^":i=t^o;break;case"+":i=t+o;break;case"*":i=t*o;break;case"**":i=Math.pow(t,o);break;case"/":i=t/o;break;case"%":i=t%o;break;case"-":i=t-o;break;case"<<":i=t<<o;break;case">>":i=t>>o;break;case">>>":i=t>>>o;break;case"==":i=t==o;break;case"===":i=t===o;break;case"!=":i=t!=o;break;case"!==":i=t!==o;break;case"<":i=t<o;break;case"<=":i=t<=o;break;case">":i=t>o;break;case">=":i=t>=o;break;default:return this;}return isNaN(i)&&r.find_parent(AST_With)?this:i}),n(AST_Conditional,function(r,e){var t=this.condition._eval(r,e);if(t===this.condition)return this;var o=t?this.consequent:this.alternative,i=o._eval(r,e);return i===o?this:i}),n(AST_SymbolRef,function(r,e){var t=this.fixed_value();if(!t)return this;var o;if(HOP(t,"_eval"))o=t._eval();else{if(this._eval=return_this,o=t._eval(r,e),delete this._eval,o===t)return this;t._eval=function(){return o}}if(o&&"object"==typeof o){var i=this.definition().escaped;if(i&&e>i)return this}return o});var t={Array:Array,Math:Math,Number:Number,Object:Object,String:String},o={Math:["E","LN10","LN2","LOG2E","LOG10E","PI","SQRT1_2","SQRT2"],Number:["MAX_VALUE","MIN_VALUE","NaN","NEGATIVE_INFINITY","POSITIVE_INFINITY"]};h(o),n(AST_PropAccess,function(i,e){if(i.option("unsafe")){var s=this.property;if(s instanceof AST_Node&&(s=s._eval(i,e),s===this.property))return this;var n,r=this.expression;if(oe(r)){if(!(o[r.name]||return_false)(s))return this;n=t[r.name]}else if(n=r._eval(i,e+1),!n||n===r||!HOP(n,s))return this;return n[s]}return this}),n(AST_Call,function(o,c){var n=this.expression;if(o.option("unsafe")&&n instanceof AST_PropAccess){var r=n.property;if(r instanceof AST_Node&&(r=r._eval(o,c),r===n.property))return this;var a,s=n.expression;if(oe(s)){if(!(M[s.name]||return_false)(r))return this;a=t[s.name]}else if(a=s._eval(o,c+1),a===s||!(a&&F[a.constructor.name]||return_false)(r))return this;for(var l=[],e=0,p=this.args.length;e<p;e++){var i=this.args[e],d=i._eval(o,c);if(i===d)return this;l.push(d)}try{return a[r].apply(a,l)}catch(t){o.warn("Error evaluating {code} [{file}:{line},{col}]",{code:this.print_to_string(),file:this.start.file,line:this.start.line,col:this.start.col})}}return this}),n(AST_New,return_this)}(function(o,e){o.DEFMETHOD("_eval",e)}),function(n){function s(t){return te(AST_UnaryPrefix,t,{operator:"!",expression:t})}function a(t,e,o){var i=s(t);if(o){var n=te(AST_SimpleStatement,e,{body:e});return u(i,n)===n?e:i}return u(i,e)}n(AST_Node,function(){return s(this)}),n(AST_Statement,function(){throw new Error("Cannot negate a statement")}),n(AST_Function,function(){return s(this)}),n(AST_Arrow,function(){return s(this)}),n(AST_UnaryPrefix,function(){return"!"==this.operator?this.expression:s(this)}),n(AST_Sequence,function(o){var e=this.expressions.slice();return e.push(e.pop().negate(o)),W(this,e)}),n(AST_Conditional,function(o,e){var t=this.clone();return t.consequent=t.consequent.negate(o),t.alternative=t.alternative.negate(o),a(this,t,e)}),n(AST_Binary,function(t,e){var o=this.clone(),n=this.operator;if(t.option("unsafe_comps"))switch(n){case"<=":return o.operator=">",o;case"<":return o.operator=">=",o;case">=":return o.operator="<",o;case">":return o.operator="<=",o;}return"=="===n?(o.operator="!=",o):"!="===n?(o.operator="==",o):"==="===n?(o.operator="!==",o):"!=="===n?(o.operator="===",o):"&&"===n?(o.operator="||",o.left=o.left.negate(t,e),o.right=o.right.negate(t),a(this,o,e)):"||"===n?(o.operator="&&",o.left=o.left.negate(t,e),o.right=o.right.negate(t),a(this,o,e)):s(this)})}(function(o,n){o.DEFMETHOD("negate",function(t,e){return n.call(this,t,e)})});var H=makePredicate("Boolean decodeURI decodeURIComponent Date encodeURI encodeURIComponent Error escape EvalError isFinite isNaN Number Object parseFloat parseInt RangeError ReferenceError String SyntaxError TypeError unescape 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n(this.body,t)}),o(AST_Call,function(t){return!!n(this.args,t)||!this.is_expr_pure(t)&&(!!this.expression.may_throw(t)||!(this.expression instanceof AST_Lambda)||n(this.expression.body,t))}),o(AST_Case,function(t){return this.expression.may_throw(t)||n(this.body,t)}),o(AST_Conditional,function(t){return this.condition.may_throw(t)||this.consequent.may_throw(t)||this.alternative.may_throw(t)}),o(AST_Definitions,function(t){return n(this.definitions,t)}),o(AST_Dot,function(t){return this.expression.may_throw_on_access(t)||this.expression.may_throw(t)}),o(AST_If,function(t){return this.condition.may_throw(t)||this.body&&this.body.may_throw(t)||this.alternative&&this.alternative.may_throw(t)}),o(AST_LabeledStatement,function(t){return this.body.may_throw(t)}),o(AST_Object,function(t){return n(this.properties,t)}),o(AST_ObjectProperty,function(t){return this.value.may_throw(t)}),o(AST_Sequence,function(t){return n(this.expressions,t)}),o(AST_SimpleStatement,function(t){return this.body.may_throw(t)}),o(AST_Sub,function(t){return this.expression.may_throw_on_access(t)||this.expression.may_throw(t)||this.property.may_throw(t)}),o(AST_Switch,function(t){return this.expression.may_throw(t)||n(this.body,t)}),o(AST_SymbolRef,function(t){return!this.is_declared(t)}),o(AST_Try,function(t){return n(this.body,t)||this.bcatch&&this.bcatch.may_throw(t)||this.bfinally&&this.bfinally.may_throw(t)}),o(AST_Unary,function(t){return!("typeof"==this.operator&&this.expression instanceof AST_SymbolRef)&&this.expression.may_throw(t)}),o(AST_VarDef,function(t){return!!this.value&&this.value.may_throw(t)})}(function(o,e){o.DEFMETHOD("may_throw",e)}),function(n){function e(o){for(var e=o.length;0<=--e;)if(!o[e].is_constant_expression())return!1;return!0}function t(a){var e=this,t=!0;return e.walk(new TreeWalker(function(o){if(!t)return!0;if(o instanceof AST_SymbolRef){if(e.inlined)return t=!1,!0;var i=o.definition();if(member(i,e.enclosed)&&!e.variables.has(i.name)){if(a){var n=a.find_variable(o);if(i.undeclared?!n:n===i)return t="f",!0}t=!1}return!0}return o instanceof AST_This&&e instanceof AST_Arrow?(t=!1,!0):void 0})),t}n(AST_Node,return_false),n(AST_Constant,return_true),n(AST_Class,t),n(AST_Lambda,t),n(AST_Unary,function(){return this.expression.is_constant_expression()}),n(AST_Binary,function(){return this.left.is_constant_expression()&&this.right.is_constant_expression()}),n(AST_Array,function(){return e(this.elements)}),n(AST_Object,function(){return e(this.properties)}),n(AST_ObjectProperty,function(){return!(this.key instanceof AST_Node)&&this.value.is_constant_expression()})}(function(o,e){o.DEFMETHOD("is_constant_expression",e)}),function(o){function e(){var t=this.body.length;return 0<t&&m(this.body[t-1])}o(AST_Statement,return_null),o(AST_Jump,return_this),o(AST_Import,function(){return null}),o(AST_BlockStatement,e),o(AST_SwitchBranch,e),o(AST_If,function(){return this.alternative&&m(this.body)&&m(this.alternative)&&this})}(function(o,e){o.DEFMETHOD("aborts",e)}),G(AST_Directive,function(o,e){return e.has_directive(o.value)===o?o:te(AST_EmptyStatement,o)}),G(AST_Debugger,function(o,e){return e.option("drop_debugger")?te(AST_EmptyStatement,o):o}),G(AST_LabeledStatement,function(o,e){return o.body instanceof AST_Break&&e.loopcontrol_target(o.body)===o.body?te(AST_EmptyStatement,o):0==o.label.references.length?o.body:o}),G(AST_Block,function(o,e){return i(o.body,e),o}),G(AST_BlockStatement,function(o,e){switch(i(o.body,e),o.body.length){case 1:if(!e.has_directive("use strict")&&e.parent()instanceof AST_If||l(o.body[0]))return o.body[0];break;case 0:return te(AST_EmptyStatement,o);}return o}),AST_Scope.DEFMETHOD("drop_unused",function(r){function e(o,e){var t,n=i(o);if(n instanceof AST_SymbolRef&&!Q(o.left,AST_SymbolBlockDeclaration)&&f.variables.get(n.name)===(t=n.definition()))return o instanceof AST_Assign&&(o.right.walk(h),!t.chained&&o.left.fixed_value()===o.right&&(d[t.id]=o)),!0;if(o instanceof AST_SymbolRef)return t=o.definition(),t.id in c||(c[t.id]=!0,p.push(t),(t=t.redefined())&&(c[t.id]=!0,p.push(t))),!0;if(o instanceof AST_Scope){var r=g;return g=o,e(),g=r,!0}}if(r.option("unused")&&!r.has_directive("use asm")){var f=this;if(!(f.uses_eval||f.uses_with)){var o=!(f instanceof AST_Toplevel)||r.toplevel.funcs,a=!(f instanceof AST_Toplevel)||r.toplevel.vars,i=/keep_assign/.test(r.option("unused"))?return_false:function(t){return t instanceof AST_Assign&&(t.write_only||"="==t.operator)?t.left:t instanceof AST_Unary&&t.write_only?t.expression:void 0},p=[],c=Object.create(null),d=Object.create(null);f instanceof AST_Toplevel&&r.top_retain&&f.variables.each(function(e){r.top_retain(e)&&!(e.id in c)&&(c[e.id]=!0,p.push(e))});var _=new Dictionary,n=new Dictionary,u=null,g=this,h=new TreeWalker(function(t,i){if(t!==f){if(t instanceof AST_Defun||t instanceof AST_DefClass){var 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TreeTransformer(function(e,t,n){function u(t){return{name:t.name,file:t.start.file,line:t.start.line,col:t.start.col}}var p=y.parent();if(a){var h=i(e);if(h instanceof AST_SymbolRef){var m=h.definition(),v=m.id in c;if(e instanceof AST_Assign){if(!v||m.id in d&&d[m.id]!==e)return J(p,e,e.right.transform(y));}else if(!v)return te(AST_Number,e,{value:0})}}if(g===f){if(e.name&&(!r.option("keep_classnames")&&e instanceof AST_ClassExpression||!r.option("keep_fnames")&&e instanceof AST_Function)){var m=e.name.definition();(!(m.id in c)||1<m.orig.length)&&(e.name=null)}if(e instanceof AST_Lambda&&!(e instanceof AST_Accessor))for(var h,b=!r.option("keep_fargs"),x=e.argnames,w=x.length;0<=--w;)h=x[w],h instanceof AST_Expansion&&(h=h.expression),h instanceof AST_DefaultAssign&&(h=h.left),h instanceof AST_Destructuring||h.definition().id in c?b=!1:(h.__unused=!0,b&&(x.pop(),r[h.unreferenced()?"warn":"info"]("Dropping unused function argument {name} [{file}:{line},{col}]",u(h))));if((e instanceof AST_Defun||e instanceof AST_DefClass)&&e!==f){var m=e.name.definition(),E=m.id in c||!o&&m.global;if(!E)return r[e.name.unreferenced()?"warn":"info"]("Dropping unused function {name} [{file}:{line},{col}]",u(e.name)),m.eliminated++,te(AST_EmptyStatement,e)}if(e instanceof AST_Definitions&&!(p instanceof AST_ForIn&&p.init===e)){var z=!(p instanceof AST_Toplevel)&&!(e instanceof AST_Var),k=[],D=[],O=[],q=[];switch(e.definitions.forEach(function(t){if(t.value&&(t.value=t.value.transform(y)),t.name instanceof AST_Destructuring)return O.push(t);var o=t.name.definition();if(z&&o.global)return O.push(t);if(!(a||z)||o.id in c){if(t.value&&o.id in d&&d[o.id]!==t&&(t.value=t.value.drop_side_effect_free(r)),t.name instanceof AST_SymbolVar){var i=_.get(o.id);if(1<i.length&&(!t.value||o.orig.indexOf(t.name)>o.eliminated)){if(r.warn("Dropping duplicated definition of variable {name} [{file}:{line},{col}]",u(t.name)),t.value){var n=te(AST_SymbolRef,t.name,t.name);o.references.push(n);var s=te(AST_Assign,t,{operator:"=",left:n,right:t.value});d[o.id]===t&&(d[o.id]=s),q.push(s.transform(y))}return remove(i,t),void o.eliminated++}}t.value?(0<q.length&&(0<O.length?(q.push(t.value),t.value=W(t.value,q)):k.push(te(AST_SimpleStatement,e,{body:W(e,q)})),q=[]),O.push(t)):D.push(t)}else if(o.orig[0]instanceof AST_SymbolCatch){var l=t.value&&t.value.drop_side_effect_free(r);l&&q.push(l),t.value=null,D.push(t)}else{var l=t.value&&t.value.drop_side_effect_free(r);l?(r.warn("Side effects in initialization of unused variable {name} [{file}:{line},{col}]",u(t.name)),q.push(l)):r[t.name.unreferenced()?"warn":"info"]("Dropping unused variable {name} [{file}:{line},{col}]",u(t.name)),o.eliminated++}}),(0<D.length||0<O.length)&&(e.definitions=D.concat(O),k.push(e)),0<q.length&&k.push(te(AST_SimpleStatement,e,{body:W(e,q)})),k.length){case 0:return n?MAP.skip:te(AST_EmptyStatement,e);case 1:return k[0];default:return n?MAP.splice(k):te(AST_BlockStatement,e,{body:k});}}if(e instanceof AST_For){t(e,this);var T;return e.init instanceof AST_BlockStatement&&(T=e.init,e.init=T.body.pop(),T.body.push(e)),e.init instanceof AST_SimpleStatement?e.init=e.init.body:s(e.init)&&(e.init=null),T?n?MAP.splice(T.body):T:e}if(e instanceof AST_LabeledStatement&&e.body instanceof AST_For){if(t(e,this),e.body instanceof AST_BlockStatement){var T=e.body;return e.body=T.body.pop(),T.body.push(e),n?MAP.splice(T.body):T}return e}if(e instanceof AST_BlockStatement)return t(e,this),n&&all(e.body,l)?MAP.splice(e.body):e;if(e instanceof AST_Scope){var F=g;return g=e,t(e,this),g=F,e}}});f.transform(y)}}}),AST_Scope.DEFMETHOD("hoist_declarations",function(r){var v=this;if(r.has_directive("use asm"))return v;if(!Array.isArray(v.body))return v;var e=r.option("hoist_funs"),t=r.option("hoist_vars");if(e||t){var o=[],n=[],i=new Dictionary,a=0,s=0;v.walk(new TreeWalker(function(t){return!!(t instanceof AST_Scope&&t!==v)||(t instanceof AST_Var?(++s,!0):void 0)})),t=t&&1<s;var l=new TreeTransformer(function(s){if(s!==v){if(s instanceof AST_Directive)return o.push(s),te(AST_EmptyStatement,s);if(e&&s instanceof AST_Defun&&!(l.parent()instanceof AST_Export)&&l.parent()===v)return n.push(s),te(AST_EmptyStatement,s);if(t&&s instanceof AST_Var){s.definitions.forEach(function(t){t.name instanceof AST_Destructuring||(i.set(t.name.name,t),++a)});var p=s.to_assignments(r),d=l.parent();if(d instanceof AST_ForIn&&d.init===s){if(null==p){var f=s.definitions[0].name;return te(AST_SymbolRef,f,f)}return p}return d instanceof AST_For&&d.init===s?p:p?te(AST_SimpleStatement,s,{body:p}):te(AST_EmptyStatement,s)}if(s instanceof AST_Scope)return s}});if(v=v.transform(l),0<a){var p=[];if(i.each(function(n,e){v instanceof AST_Lambda&&find_if(function(e){return e.name==n.name.name},v.args_as_names())?i.del(e):(n=n.clone(),n.value=null,p.push(n),i.set(e,n))}),0<p.length){for(;0<v.body.length;){if(v.body[0]instanceof AST_SimpleStatement){var d,f,c=v.body[0].body;if(c instanceof 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e=this.var_names();i=i.replace(/[^a-z_$]+/ig,"_");for(var t=i,o=0;e[t];o++)t=i+"$"+o;return e[t]=!0,t}),AST_Scope.DEFMETHOD("hoist_properties",function(r){var u=this;if(!r.option("hoist_props")||r.has_directive("use asm"))return u;var e=u instanceof AST_Toplevel&&r.top_retain||return_false,t=Object.create(null),o=new TreeTransformer(function(n,i){function a(t){var e=te(p.CTOR,p,{name:u.make_var_name(p.name+"_"+t),scope:u}),o=u.def_variable(e);return d.set(t,o),u.enclosed.push(o),e}if(n instanceof AST_Definitions&&o.parent()instanceof AST_Export)return n;if(n instanceof AST_VarDef){var s,l,p=n.name;if(p.scope===u&&1!=(s=p.definition()).escaped&&!s.single_use&&!s.direct_access&&!r.exposed(s)&&!e(s)&&(l=p.fixed_value())===n.value&&l instanceof AST_Object){i(n,this);var d=new Dictionary,f=[];return l.properties.forEach(function(t){f.push(te(AST_VarDef,n,{name:a(t.key),value:t.value}))}),t[s.id]=d,MAP.splice(f)}}if(n instanceof AST_PropAccess&&n.expression instanceof AST_SymbolRef){var d=t[n.expression.definition().id];if(d){var s=d.get(_(n.property)),p=te(AST_SymbolRef,n,{name:s.name,scope:n.expression.scope,thedef:s});return p.reference({}),p}}});return u.transform(o)}),function(t){function a(i,e,t){var o=i.length;if(!o)return null;for(var n,r=[],a=!1,s=0;s<o;s++)n=i[s].drop_side_effect_free(e,t),a|=n!==i[s],n&&(r.push(n),t=!1);return a?r.length?r:null:i}t(AST_Node,return_this),t(AST_Constant,return_null),t(AST_This,return_null),t(AST_Call,function(t,e){if(!this.is_expr_pure(t)){if(this.expression.is_call_pure(t)){var o=this.args.slice();return o.unshift(this.expression.expression),o=a(o,t,e),o&&W(this,o)}if($(this.expression)&&(!this.expression.name||!this.expression.name.definition().references.length)){var n=this.clone();return n.expression.process_expression(!1,t),n}return this}this.pure&&t.warn("Dropping __PURE__ call [{file}:{line},{col}]",this.start);var i=a(this.args,t,e);return i&&W(this,i)}),t(AST_Accessor,return_null),t(AST_Function,return_null),t(AST_Arrow,return_null),t(AST_ClassExpression,return_null),t(AST_Binary,function(r,e){var t=this.right.drop_side_effect_free(r);if(!t)return this.left.drop_side_effect_free(r,e);if(O(this.operator)){if(t===this.right)return this;var o=this.clone();return o.right=t,o}var i=this.left.drop_side_effect_free(r,e);return i?W(this,[i,t]):this.right.drop_side_effect_free(r,e)}),t(AST_Assign,function(o){var e=this.left;if(e.has_side_effects(o)||o.has_directive("use strict")&&e instanceof AST_PropAccess&&e.expression.is_constant())return this;for(this.write_only=!0;e instanceof AST_PropAccess;)e=e.expression;return e.is_constant_expression(o.find_parent(AST_Scope))?this.right.drop_side_effect_free(o):this}),t(AST_Conditional,function(n){var e=this.consequent.drop_side_effect_free(n),t=this.alternative.drop_side_effect_free(n);if(e===this.consequent&&t===this.alternative)return this;if(!e)return t?te(AST_Binary,this,{operator:"||",left:this.condition,right:t}):this.condition.drop_side_effect_free(n);if(!t)return te(AST_Binary,this,{operator:"&&",left:this.condition,right:e});var o=this.clone();return o.consequent=e,o.alternative=t,o}),t(AST_Unary,function(n,e){if(q(this.operator))return this.write_only=!this.expression.has_side_effects(n),this;if("typeof"==this.operator&&this.expression instanceof AST_SymbolRef)return null;var t=this.expression.drop_side_effect_free(n,e);return e&&t&&f(t)?t===this.expression&&"!"==this.operator?this:t.negate(n,e):t}),t(AST_SymbolRef,function(t){return this.is_declared(t)?null:this}),t(AST_Object,function(o,e){var t=a(this.properties,o,e);return t&&W(this,t)}),t(AST_ObjectProperty,function(o,e){return this.value.drop_side_effect_free(o,e)}),t(AST_Array,function(o,e){var t=a(this.elements,o,e);return t&&W(this,t)}),t(AST_Dot,function(o,e){return this.expression.may_throw_on_access(o)?this:this.expression.drop_side_effect_free(o,e)}),t(AST_Sub,function(n,e){if(this.expression.may_throw_on_access(n))return this;var t=this.expression.drop_side_effect_free(n,e);if(!t)return this.property.drop_side_effect_free(n,e);var o=this.property.drop_side_effect_free(n);return o?W(this,[t,o]):t}),t(AST_Sequence,function(n){var e=this.tail_node(),t=e.drop_side_effect_free(n);if(t===e)return this;var o=this.expressions.slice(0,-1);return t&&o.push(t),W(this,o)}),t(AST_Expansion,function(o,e){return this.expression.drop_side_effect_free(o,e)}),t(AST_TemplateSegment,return_null),t(AST_TemplateString,function(o){var e=a(this.segments,o,first_in_statement);return e&&W(this,e)})}(function(o,e){o.DEFMETHOD("drop_side_effect_free",e)}),G(AST_SimpleStatement,function(n,e){if(e.option("side_effects")){var t=n.body,o=t.drop_side_effect_free(e,!0);if(!o)return e.warn("Dropping side-effect-free statement [{file}:{line},{col}]",n.start),te(AST_EmptyStatement,n);if(o!==t)return te(AST_SimpleStatement,n,{body:o})}return n}),G(AST_While,function(o,e){return e.option("loops")?te(AST_For,o,o).optimize(e):o}),G(AST_Do,function(r,e){if(!e.option("loops"))return r;var t=r.condition.tail_node().evaluate(e);if(!(t instanceof AST_Node)){if(t)return te(AST_For,r,{body:te(AST_BlockStatement,r.body,{body:[r.body,te(AST_SimpleStatement,r.condition,{body:r.condition})]})}).optimize(e);var o=!1,i=new TreeWalker(function(e){return!!(e instanceof AST_Scope||o)||(e instanceof AST_LoopControl&&i.loopcontrol_target(e)===r?o=!0:void 0)}),n=e.parent();if((n instanceof AST_LabeledStatement?n:r).walk(i),!o)return te(AST_BlockStatement,r.body,{body:[r.body,te(AST_SimpleStatement,r.condition,{body:r.condition})]}).optimize(e)}return r}),G(AST_For,function(a,e){if(!e.option("loops"))return a;if(e.option("side_effects")&&a.init&&(a.init=a.init.drop_side_effect_free(e)),a.condition){var t=a.condition.evaluate(e);if(!(t instanceof AST_Node))if(t)a.condition=null;else if(!e.option("dead_code")){var o=a.condition;a.condition=r(t,a.condition),a.condition=u(a.condition.transform(e),o)}if(e.option("dead_code")&&(t instanceof AST_Node&&(t=a.condition.tail_node().evaluate(e)),!t)){var i=[];return c(e,a.body,i),a.init instanceof AST_Statement?i.push(a.init):a.init&&i.push(te(AST_SimpleStatement,a.init,{body:a.init})),i.push(te(AST_SimpleStatement,a.condition,{body:a.condition})),te(AST_BlockStatement,a,{body:i}).optimize(e)}}return v(a,e)}),G(AST_If,function(f,e){if(s(f.alternative)&&(f.alternative=null),!e.option("conditionals"))return f;var t=f.condition.evaluate(e);if(!e.option("dead_code")&&!(t instanceof AST_Node)){var o=f.condition;f.condition=r(t,o),f.condition=u(f.condition.transform(e),o)}if(e.option("dead_code")){if(t instanceof AST_Node&&(t=f.condition.tail_node().evaluate(e)),!t){e.warn("Condition always false [{file}:{line},{col}]",f.condition.start);var i=[];return c(e,f.body,i),i.push(te(AST_SimpleStatement,f.condition,{body:f.condition})),f.alternative&&i.push(f.alternative),te(AST_BlockStatement,f,{body:i}).optimize(e)}if(!(t instanceof AST_Node)){e.warn("Condition always true [{file}:{line},{col}]",f.condition.start);var i=[];return f.alternative&&c(e,f.alternative,i),i.push(te(AST_SimpleStatement,f.condition,{body:f.condition})),i.push(f.body),te(AST_BlockStatement,f,{body:i}).optimize(e)}}var n=f.condition.negate(e),a=f.condition.print_to_string().length,l=n.print_to_string().length,p=l<a;if(f.alternative&&p){p=!1,f.condition=n;var d=f.body;f.body=f.alternative||te(AST_EmptyStatement,f),f.alternative=d}if(s(f.body)&&s(f.alternative))return te(AST_SimpleStatement,f.condition,{body:f.condition.clone()}).optimize(e);if(f.body instanceof AST_SimpleStatement&&f.alternative instanceof AST_SimpleStatement)return te(AST_SimpleStatement,f,{body:te(AST_Conditional,f,{condition:f.condition,consequent:f.body.body,alternative:f.alternative.body})}).optimize(e);if(s(f.alternative)&&f.body instanceof AST_SimpleStatement)return a===l&&!p&&f.condition instanceof AST_Binary&&"||"==f.condition.operator&&(p=!0),p?te(AST_SimpleStatement,f,{body:te(AST_Binary,f,{operator:"||",left:n,right:f.body.body})}).optimize(e):te(AST_SimpleStatement,f,{body:te(AST_Binary,f,{operator:"&&",left:f.condition,right:f.body.body})}).optimize(e);if(f.body instanceof AST_EmptyStatement&&f.alternative instanceof AST_SimpleStatement)return te(AST_SimpleStatement,f,{body:te(AST_Binary,f,{operator:"||",left:f.condition,right:f.alternative.body})}).optimize(e);if(f.body instanceof AST_Exit&&f.alternative instanceof AST_Exit&&f.body.TYPE==f.alternative.TYPE)return te(f.body.CTOR,f,{value:te(AST_Conditional,f,{condition:f.condition,consequent:f.body.value||te(AST_Undefined,f.body),alternative:f.alternative.value||te(AST_Undefined,f.alternative)}).transform(e)}).optimize(e);if(!(f.body instanceof AST_If)||f.body.alternative||f.alternative||(f=te(AST_If,f,{condition:te(AST_Binary,f.condition,{operator:"&&",left:f.condition,right:f.body.condition}),body:f.body.body,alternative:null})),m(f.body)&&f.alternative){var g=f.alternative;return f.alternative=null,te(AST_BlockStatement,f,{body:[f,g]}).optimize(e)}if(m(f.alternative)){var i=f.body;return f.body=f.alternative,f.condition=p?n:f.condition.negate(e),f.alternative=null,te(AST_BlockStatement,f,{body:[f,i]}).optimize(e)}return f}),G(AST_Switch,function(s,y){function e(t,e){e&&!m(e)?e.body=e.body.concat(t.body):c(y,t,p)}if(!y.option("switches"))return s;var t,o=s.expression.evaluate(y);if(!(o instanceof AST_Node)){var n=s.expression;s.expression=r(o,n),s.expression=u(s.expression.transform(y),n)}if(!y.option("dead_code"))return s;o instanceof AST_Node&&(o=s.expression.tail_node().evaluate(y));for(var a,l,p=[],d=[],f=0,_=s.body.length;f<_&&!l;f++){if(t=s.body[f],t instanceof AST_Default)a?e(t,d[d.length-1]):a=t;else if(!(o instanceof AST_Node)){var i=t.expression.evaluate(y);if(!(i instanceof AST_Node)&&i!==o){e(t,d[d.length-1]);continue}if(i instanceof AST_Node&&(i=t.expression.tail_node().evaluate(y)),i===o&&(l=t,a)){var u=d.indexOf(a);d.splice(u,1),e(a,d[u-1]),a=null}}if(m(t)){var g=d[d.length-1];m(g)&&g.body.length==t.body.length&&te(AST_BlockStatement,g,g).equivalent_to(te(AST_BlockStatement,t,t))&&(g.body=[])}d.push(t)}for(;f<_;)e(s.body[f++],d[d.length-1]);for(0<d.length&&(d[0].body=p.concat(d[0].body)),s.body=d;t=d[d.length-1];){var h=t.body[t.body.length-1];if(h instanceof AST_Break&&y.loopcontrol_target(h)===s&&t.body.pop(),t.body.length||t instanceof AST_Case&&(a||t.expression.has_side_effects(y)))break;d.pop()===a&&(a=null)}if(0==d.length)return te(AST_BlockStatement,s,{body:p.concat(te(AST_SimpleStatement,s.expression,{body:s.expression}))}).optimize(y);if(1==d.length&&(d[0]===l||d[0]===a)){var w=!1,v=new TreeWalker(function(e){return!!(w||e instanceof AST_Lambda||e instanceof AST_SimpleStatement)||void(e instanceof AST_Break&&v.loopcontrol_target(e)===s&&(w=!0))});if(s.walk(v),!w){var b=d[0].body.slice(),i=d[0].expression;return i&&b.unshift(te(AST_SimpleStatement,i,{body:i})),b.unshift(te(AST_SimpleStatement,s.expression,{body:s.expression})),te(AST_BlockStatement,s,{body:b}).optimize(y)}}return s}),G(AST_Try,function(n,e){if(i(n.body,e),n.bcatch&&n.bfinally&&all(n.bfinally.body,s)&&(n.bfinally=null),e.option("dead_code")&&all(n.body,s)){var t=[];return n.bcatch&&(c(e,n.bcatch,t),t.forEach(function(t){t instanceof AST_Definitions&&t.definitions.forEach(function(o){var e=o.name.definition().redefined();e&&(o.name=o.name.clone(),o.name.thedef=e)})})),n.bfinally&&(t=t.concat(n.bfinally.body)),te(AST_BlockStatement,n,{body:t}).optimize(e)}return n}),AST_Definitions.DEFMETHOD("remove_initializers",function(){var n=[];this.definitions.forEach(function(e){e.name instanceof AST_SymbolDeclaration?(e.value=null,n.push(e)):e.name.walk(new TreeWalker(function(t){t instanceof AST_SymbolDeclaration&&n.push(te(AST_VarDef,e,{name:t,value:null}))}))}),this.definitions=n}),AST_Definitions.DEFMETHOD("to_assignments",function(n){var r=n.option("reduce_vars"),e=this.definitions.reduce(function(t,e){if(e.value&&!(e.name instanceof AST_Destructuring)){var o=te(AST_SymbolRef,e.name,e.name);t.push(te(AST_Assign,e,{operator:"=",left:o,right:e.value})),r&&(o.definition().fixed=!1)}else if(e.value){var i=te(AST_VarDef,e,{name:e.name,value:e.value}),n=te(AST_Var,e,{definitions:[i]});t.push(n)}return e=e.name.definition(),e.eliminated++,e.replaced--,t},[]);return 0==e.length?null:W(this,e)}),G(AST_Definitions,function(t){return 0==t.definitions.length?te(AST_EmptyStatement,t):t}),G(AST_Import,function(t){return t}),G(AST_Call,function(u,g){function o(e){return e?e instanceof AST_Return?e.value?e.value.clone(!0):te(AST_Undefined,u):e instanceof AST_SimpleStatement?te(AST_UnaryPrefix,e,{operator:"void",expression:e.body.clone(!0)}):void 0:te(AST_Undefined,u)}function e(n){var e=_.body instanceof AST_Node?[_.body]:_.body,t=e.length;if(3>g.option("inline"))return 1==t&&o(n);n=null;for(var i,r=0;r<t;r++)if(i=e[r],!(i instanceof AST_Var)){if(n)return!1;n=i}else if(n&&!all(i.definitions,function(t){return!t.value}))return!1;return o(n)}function n(r,e){for(var t,o=0,n=_.argnames.length;o<n;o++){if(t=_.argnames[o],t instanceof AST_DefaultAssign){if(t.left.__unused)continue;return!1}if(t instanceof AST_Destructuring)return!1;if(t instanceof AST_Expansion){if(t.expression.__unused)continue;return!1}if(!t.__unused){if(!e||r[t.name]||D(t.name)||B.var_names()[t.name])return!1;L&&L.push(t.definition())}}return!0}function a(s,e){for(var t,o=_.body.length,n=0;n<o;n++)if(t=_.body[n],t instanceof AST_Var){if(!e)return!1;for(var r,i=t.definitions.length;0<=--i;){if(r=t.definitions[i].name,s[r.name]||D(r.name)||B.var_names()[r.name])return!1;L&&L.push(r.definition())}}return!0}function t(){var o=Object.create(null);do if(B=g.parent(++G),B instanceof AST_Catch)o[B.argname.name]=!0;else if(B instanceof AST_IterationStatement)L=[];else if(B instanceof AST_SymbolRef&&B.fixed_value()instanceof AST_Scope)return!1;while(!(B instanceof AST_Scope)||B instanceof AST_Arrow);var e=!(B instanceof AST_Toplevel)||g.toplevel.vars,t=g.option("inline");return!!a(o,3<=t&&e)&&!!n(o,2<=t&&e)&&(!L||0==L.length||!x(_,L))}function k(e,t,o,i){var n=o.definition();B.variables.set(o.name,n),B.enclosed.push(n),B.var_names()[o.name]||(B.var_names()[o.name]=!0,e.push(te(AST_VarDef,o,{name:o,value:null})));var r=te(AST_SymbolRef,o,o);n.references.push(r),i&&t.push(te(AST_Assign,u,{operator:"=",left:r,right:i}))}function l(e,t){for(var o=_.argnames.length,n=u.args.length;--n>=o;)t.push(u.args[n]);for(n=o;0<=--n;){var r=_.argnames[n],i=u.args[n];if(r.__unused||!r.name||B.var_names()[r.name])i&&t.push(i);else{var a=te(AST_SymbolVar,r,r);r.definition().orig.push(a),!i&&L&&(i=te(AST_Undefined,u)),k(e,t,a,i)}}e.reverse(),t.reverse()}function p(r,e){for(var t,o=e.length,n=0,a=_.body.length;n<a;n++)if(t=_.body[n],t instanceof AST_Var)for(var i=0,s=t.definitions.length;i<s;i++){var l=t.definitions[i],p=l.name;if(k(r,e,p,l.value),L){var d=p.definition(),f=te(AST_SymbolRef,p,p);d.references.push(f),e.splice(o++,0,te(AST_Assign,l,{operator:"=",left:f,right:te(AST_Undefined,p)}))}}}function d(){var o=[],e=[];return l(o,e),p(o,e),e.push(M),o.length&&(b=B.body.indexOf(g.parent(G-1))+1,B.body.splice(b,0,te(AST_Var,_,{definitions:o}))),e}var c=u.expression,_=c,h=all(u.args,function(t){return!(t instanceof AST_Expansion)});g.option("reduce_vars")&&_ instanceof AST_SymbolRef&&(_=_.fixed_value());var m=_ instanceof AST_Lambda;if(g.option("unused")&&h&&m&&!_.uses_arguments&&!_.uses_eval){for(var v=0,y=0,b=0,E=u.args.length;b<E;b++){if(_.argnames[b]instanceof AST_Expansion){if(_.argnames[b].expression.__unused)for(;b<E;){var i=u.args[b++].drop_side_effect_free(g);i&&(u.args[v++]=i)}else for(;b<E;)u.args[v++]=u.args[b++];y=v;break}var z=b>=_.argnames.length;if(z||_.argnames[b].__unused){var i=u.args[b].drop_side_effect_free(g);if(i)u.args[v++]=i;else if(!z){u.args[v++]=te(AST_Number,u.args[b],{value:0});continue}}else u.args[v++]=u.args[b];y=v}u.args.length=y}if(g.option("unsafe"))if(oe(c))switch(c.name){case"Array":if(1!=u.args.length)return te(AST_Array,u,{elements:u.args}).optimize(g);break;case"Object":if(0==u.args.length)return te(AST_Object,u,{properties:[]});break;case"String":if(0==u.args.length)return te(AST_String,u,{value:""});if(1>=u.args.length)return te(AST_Binary,u,{left:u.args[0],operator:"+",right:te(AST_String,u,{value:""})}).optimize(g);break;case"Number":if(0==u.args.length)return te(AST_Number,u,{value:0});if(1==u.args.length)return te(AST_UnaryPrefix,u,{expression:u.args[0],operator:"+"}).optimize(g);case"Boolean":if(0==u.args.length)return te(AST_False,u);if(1==u.args.length)return te(AST_UnaryPrefix,u,{expression:te(AST_UnaryPrefix,u,{expression:u.args[0],operator:"!"}),operator:"!"}).optimize(g);break;case"RegExp":var D=[];if(all(u.args,function(o){var e=o.evaluate(g);return D.unshift(e),o!==e}))try{return ne(g,u,te(AST_RegExp,u,{value:RegExp.apply(RegExp,D)}))}catch(e){g.warn("Error converting {expr} [{file}:{line},{col}]",{expr:u.print_to_string(),file:u.start.file,line:u.start.line,col:u.start.col})}break;case"Symbol":return u.args=[],u;}else if(c instanceof AST_Dot)switch(c.property){case"toString":if(0==u.args.length&&!c.expression.may_throw_on_access(g))return te(AST_Binary,u,{left:te(AST_String,u,{value:""}),operator:"+",right:c.expression}).optimize(g);break;case"join":if(c.expression instanceof AST_Array)EXIT:{var O;if(0<u.args.length&&(O=u.args[0].evaluate(g),O===u.args[0]))break EXIT;for(var q,T=[],F=[],b=0,E=c.expression.elements.length;b<E;b++){if(q=c.expression.elements[b],q instanceof AST_Expansion)break EXIT;var M=q.evaluate(g);M===q?(0<F.length&&(T.push(te(AST_String,u,{value:F.join(O)})),F.length=0),T.push(q)):F.push(M)}if(0<F.length&&T.push(te(AST_String,u,{value:F.join(O)})),0==T.length)return te(AST_String,u,{value:""});if(1==T.length)return T[0].is_string(g)?T[0]:te(AST_Binary,T[0],{operator:"+",left:te(AST_String,u,{value:""}),right:T[0]});if(""==O){var H;return H=T[0].is_string(g)||T[1].is_string(g)?T.shift():te(AST_String,u,{value:""}),T.reduce(function(o,e){return te(AST_Binary,e,{operator:"+",left:o,right:e})},H).optimize(g)}var i=u.clone();return i.expression=i.expression.clone(),i.expression.expression=i.expression.expression.clone(),i.expression.expression.elements=T,ne(g,u,i)}break;case"charAt":if(c.expression.is_string(g)){var N=u.args[0],j=N?N.evaluate(g):0;if(j!==N)return te(AST_Sub,c,{expression:c.expression,property:r(0|j,N||c)}).optimize(g)}break;case"apply":if(2==u.args.length&&u.args[1]instanceof AST_Array){var I=u.args[1].elements.slice();return I.unshift(u.args[0]),te(AST_Call,u,{expression:te(AST_Dot,c,{expression:c.expression,property:"call"}),args:I}).optimize(g)}break;case"call":var C=c.expression;if(C instanceof AST_SymbolRef&&(C=C.fixed_value()),C instanceof AST_Lambda&&!C.contains_this())return W(this,[u.args[0],te(AST_Call,u,{expression:c.expression,args:u.args.slice(1)})]).optimize(g);}if(g.option("unsafe_Function")&&oe(c)&&"Function"==c.name){if(0==u.args.length)return te(AST_Function,u,{argnames:[],body:[]}).optimize(g);if(all(u.args,function(t){return t instanceof AST_String}))try{var R="n(function("+u.args.slice(0,-1).map(function(t){return t.value}).join(",")+"){"+u.args[u.args.length-1].value+"})",P=parse(R),S={ie8:g.option("ie8")};P.figure_out_scope(S);var V=new Compressor(g.options);P=P.transform(V),P.figure_out_scope(S),base54.reset(),P.compute_char_frequency(S),P.mangle_names(S);var A;P.walk(new TreeWalker(function(t){return!!A||($(t)?(A=t,!0):void 0)})),A.body instanceof AST_Node&&(A.body=[te(AST_Return,A.body,{value:A.body})]);var R=OutputStream();return AST_BlockStatement.prototype._codegen.call(A,A,R),u.args=[te(AST_String,u,{value:A.argnames.map(function(t){return t.print_to_string()}).join(",")}),te(AST_String,u.args[u.args.length-1],{value:R.get().replace(/^\{|\}$/g,"")})],u}catch(e){if(e instanceof JS_Parse_Error)g.warn("Error parsing code passed to new Function [{file}:{line},{col}]",u.args[u.args.length-1].start),g.warn(e.toString());else throw e}}var Y=m&&_.body;if(Y instanceof AST_Node?Y=te(AST_Return,Y,{value:Y}):Y&&(Y=Y[0]),g.option("inline")&&Y instanceof AST_Return){var M=Y.value;if(!M||M.is_constant_expression()){var I=u.args.concat(M||te(AST_Undefined,u));return W(u,I).optimize(g)}}if(m&&!_.is_generator&&!_.async){var U,M,B,L,G=-1;if(g.option("inline")&&h&&!_.uses_arguments&&!_.uses_eval&&!(_.name&&_ instanceof AST_Function)&&(!(g.find_parent(AST_Lambda)instanceof AST_Arrow)||0==_.argnames.length&&(_.body instanceof AST_Node||1==_.body.length))&&(M=e(Y))&&(c===_||g.option("unused")&&1==(U=c.definition()).references.length&&!w(g,U)&&_.is_constant_expression(c.scope))&&!u.pure&&!_.contains_this()&&t())return W(u,d()).optimize(g);if(g.option("side_effects")&&!(_.body instanceof AST_Node)&&all(_.body,s)){var I=u.args.concat(te(AST_Undefined,u));return W(u,I).optimize(g)}}if(g.option("drop_console")&&c instanceof AST_PropAccess){for(var Q=c.expression;Q.expression;)Q=Q.expression;if(oe(Q)&&"console"==Q.name)return te(AST_Undefined,u).optimize(g)}if(g.option("negate_iife")&&g.parent()instanceof AST_SimpleStatement&&f(u))return u.negate(g,!0);var $=u.evaluate(g);return $===u?u:($=r($,u).optimize(g),ne(g,$,u))}),G(AST_New,function(n,e){if(e.option("unsafe")){var t=n.expression;if(oe(t))switch(t.name){case"Object":case"RegExp":case"Function":case"Error":case"Array":return te(AST_Call,n,n).transform(e);}}return n}),G(AST_Sequence,function(r,s){function e(){var t=first_in_statement(s),o=r.expressions.length-1;r.expressions.forEach(function(n,e){e<o&&(n=n.drop_side_effect_free(s,t)),n&&(a(l,n),t=!1)})}function t(){for(;0<n&&o(l[n],s);)n--;n<l.length-1&&(l[n]=te(AST_UnaryPrefix,r,{operator:"void",expression:l[n]}),l.length=n+1)}if(!s.option("side_effects"))return r;var l=[];e();var n=l.length-1;return(t(),0==n)?(r=J(s.parent(),s.self(),l[0]),r instanceof AST_Sequence||(r=r.optimize(s)),r):(r.expressions=l,r)}),AST_Unary.DEFMETHOD("lift_sequences",function(e){if(e.option("sequences")&&this.expression instanceof AST_Sequence){var t=this.expression.expressions.slice(),o=this.clone();return o.expression=t.pop(),t.push(o),W(this,t).optimize(e)}return this}),G(AST_UnaryPostfix,function(o,e){return o.lift_sequences(e)}),G(AST_UnaryPrefix,function(a,t){var o=a.expression;if("delete"==a.operator&&!(o instanceof AST_SymbolRef||o instanceof AST_PropAccess||d(o)))return o instanceof AST_Sequence?(o=o.expressions.slice(),o.push(te(AST_True,a)),W(a,o).optimize(t)):W(a,[o,te(AST_True,a)]).optimize(t);var i=a.lift_sequences(t);if(i!==a)return i;if(t.option("side_effects")&&"void"==a.operator)return o=o.drop_side_effect_free(t),o?(a.expression=o,a):te(AST_Undefined,a).optimize(t);if(t.in_boolean_context())switch(a.operator){case"!":if(o instanceof AST_UnaryPrefix&&"!"==o.operator)return o.expression;o instanceof AST_Binary&&(a=ne(t,a,o.negate(t,first_in_statement(t))));break;case"typeof":return t.warn("Boolean expression always true [{file}:{line},{col}]",a.start),(o instanceof AST_SymbolRef?te(AST_True,a):W(a,[o,te(AST_True,a)])).optimize(t);}if("-"==a.operator&&o instanceof AST_Infinity&&(o=o.transform(t)),o instanceof AST_Binary&&("+"==a.operator||"-"==a.operator)&&("*"==o.operator||"/"==o.operator||"%"==o.operator))return te(AST_Binary,a,{operator:o.operator,left:te(AST_UnaryPrefix,o.left,{operator:a.operator,expression:o.left}),right:o.right});if("-"!=a.operator||!(o instanceof AST_Number||o instanceof AST_Infinity)){var e=a.evaluate(t);if(e!==a)return e=r(e,a).optimize(t),ne(t,e,a)}return a}),AST_Binary.DEFMETHOD("lift_sequences",function(i){if(i.option("sequences")){if(this.left instanceof AST_Sequence){var t=this.left.expressions.slice(),o=this.clone();return o.left=t.pop(),t.push(o),W(this,t).optimize(i)}if(this.right instanceof AST_Sequence&&!this.left.has_side_effects(i)){for(var n="="==this.operator&&this.left instanceof AST_SymbolRef,t=this.right.expressions,e=t.length-1,r=0;r<e&&(n||!t[r].has_side_effects(i));r++);if(r==e){t=t.slice();var o=this.clone();return o.right=t.pop(),t.push(o),W(this,t).optimize(i)}if(0<r){var o=this.clone();return o.right=W(this.right,t.slice(r)),t=t.slice(0,r),t.push(o),W(this,t).optimize(i)}}}return this});var N=makePredicate("== === != !== * & | ^");G(AST_Binary,function(a,e){function s(){return a.left.is_constant()||a.right.is_constant()||!a.left.has_side_effects(e)&&!a.right.has_side_effects(e)}function t(e){if(s()){e&&(a.operator=e);var t=a.left;a.left=a.right,a.right=t}}if(N(a.operator)&&a.right.is_constant()&&!a.left.is_constant()&&!(a.left instanceof AST_Binary&&PRECEDENCE[a.left.operator]>=PRECEDENCE[a.operator])&&t(),a=a.lift_sequences(e),e.option("comparisons"))switch(a.operator){case"===":case"!==":(a.left.is_string(e)&&a.right.is_string(e)||a.left.is_number(e)&&a.right.is_number(e)||a.left.is_boolean()&&a.right.is_boolean()||a.left.equivalent_to(a.right))&&(a.operator=a.operator.substr(0,2));case"==":case"!=":if(e.option("typeofs")&&a.left instanceof AST_String&&"undefined"==a.left.value&&a.right instanceof AST_UnaryPrefix&&"typeof"==a.right.operator){var i=a.right.expression;(i instanceof AST_SymbolRef?i.is_declared(e):!(i instanceof AST_PropAccess&&e.option("ie8")))&&(a.right=i,a.left=te(AST_Undefined,a.left).optimize(e),2==a.operator.length&&(a.operator+="="))}else if(a.left instanceof AST_SymbolRef&&a.right instanceof AST_SymbolRef&&a.left.definition()===a.right.definition()&&y(a.left.fixed_value()))return te("="==a.operator[0]?AST_True:AST_False,a);break;case"&&":case"||":var n=a.left;if(n.operator==a.operator&&(n=n.right),n instanceof AST_Binary&&n.operator==("&&"==a.operator?"!==":"===")&&a.right instanceof AST_Binary&&n.operator==a.right.operator&&(o(n.left,e)&&a.right.left instanceof AST_Null||n.left instanceof AST_Null&&o(a.right.left,e))&&!n.right.has_side_effects(e)&&n.right.equivalent_to(a.right.right)){var l=te(AST_Binary,a,{operator:n.operator.slice(0,-1),left:te(AST_Null,a),right:n.right});return n!==a.left&&(l=te(AST_Binary,a,{operator:a.operator,left:a.left.left,right:l})),l}}if("+"==a.operator&&e.in_boolean_context()){var p=a.left.evaluate(e),d=a.right.evaluate(e);if(p&&"string"==typeof p)return e.warn("+ in boolean context always true [{file}:{line},{col}]",a.start),W(a,[a.right,te(AST_True,a)]).optimize(e);if(d&&"string"==typeof d)return e.warn("+ in boolean context always true [{file}:{line},{col}]",a.start),W(a,[a.left,te(AST_True,a)]).optimize(e)}if(e.option("comparisons")&&a.is_boolean()){if(!(e.parent()instanceof AST_Binary)||e.parent()instanceof AST_Assign){var f=te(AST_UnaryPrefix,a,{operator:"!",expression:a.negate(e,first_in_statement(e))});a=ne(e,a,f)}if(e.option("unsafe_comps"))switch(a.operator){case"<":t(">");break;case"<=":t(">=");}}if("+"==a.operator){if(a.right instanceof AST_String&&""==a.right.getValue()&&a.left.is_string(e))return a.left;if(a.left instanceof AST_String&&""==a.left.getValue()&&a.right.is_string(e))return a.right;if(a.left instanceof AST_Binary&&"+"==a.left.operator&&a.left.left instanceof AST_String&&""==a.left.left.getValue()&&a.right.is_string(e))return a.left=a.left.right,a.transform(e)}if(e.option("evaluate")){switch(a.operator){case"&&":var p=!!a.left.truthy||!a.left.falsy&&a.left.evaluate(e);if(!p)return e.warn("Condition left of && always false [{file}:{line},{col}]",a.start),J(e.parent(),e.self(),a.left).optimize(e);if(!(p instanceof AST_Node))return e.warn("Condition left of && always true [{file}:{line},{col}]",a.start),W(a,[a.left,a.right]).optimize(e);var d=a.right.evaluate(e);if(!d){if(e.in_boolean_context())return e.warn("Boolean && always false [{file}:{line},{col}]",a.start),W(a,[a.left,te(AST_False,a)]).optimize(e);a.falsy=!0}else if(!(d instanceof AST_Node)){var c=e.parent();if("&&"==c.operator&&c.left===e.self()||e.in_boolean_context())return e.warn("Dropping side-effect-free && [{file}:{line},{col}]",a.start),a.left.optimize(e)}if("||"==a.left.operator){var _=a.left.right.evaluate(e);if(!_)return te(AST_Conditional,a,{condition:a.left.left,consequent:a.right,alternative:a.left.right}).optimize(e)}break;case"||":var p=!!a.left.truthy||!a.left.falsy&&a.left.evaluate(e);if(!p)return e.warn("Condition left of || always false [{file}:{line},{col}]",a.start),W(a,[a.left,a.right]).optimize(e);if(!(p instanceof AST_Node))return e.warn("Condition left of || always true [{file}:{line},{col}]",a.start),J(e.parent(),e.self(),a.left).optimize(e);var d=a.right.evaluate(e);if(!d){var c=e.parent();if("||"==c.operator&&c.left===e.self()||e.in_boolean_context())return e.warn("Dropping side-effect-free || [{file}:{line},{col}]",a.start),a.left.optimize(e)}else if(!(d instanceof AST_Node)){if(e.in_boolean_context())return e.warn("Boolean || always true [{file}:{line},{col}]",a.start),W(a,[a.left,te(AST_True,a)]).optimize(e);a.truthy=!0}if("&&"==a.left.operator){var _=a.left.right.evaluate(e);if(_&&!(_ instanceof AST_Node))return te(AST_Conditional,a,{condition:a.left.left,consequent:a.left.right,alternative:a.right}).optimize(e)}}var u=!0;switch(a.operator){case"+":if(a.left instanceof AST_Constant&&a.right instanceof AST_Binary&&"+"==a.right.operator&&a.right.left instanceof AST_Constant&&a.right.is_string(e)&&(a=te(AST_Binary,a,{operator:"+",left:te(AST_String,a.left,{value:""+a.left.getValue()+a.right.left.getValue(),start:a.left.start,end:a.right.left.end}),right:a.right.right})),a.right instanceof AST_Constant&&a.left instanceof AST_Binary&&"+"==a.left.operator&&a.left.right instanceof AST_Constant&&a.left.is_string(e)&&(a=te(AST_Binary,a,{operator:"+",left:a.left.left,right:te(AST_String,a.right,{value:""+a.left.right.getValue()+a.right.getValue(),start:a.left.right.start,end:a.right.end})})),a.left instanceof AST_Binary&&"+"==a.left.operator&&a.left.is_string(e)&&a.left.right instanceof AST_Constant&&a.right instanceof AST_Binary&&"+"==a.right.operator&&a.right.left instanceof AST_Constant&&a.right.is_string(e)&&(a=te(AST_Binary,a,{operator:"+",left:te(AST_Binary,a.left,{operator:"+",left:a.left.left,right:te(AST_String,a.left.right,{value:""+a.left.right.getValue()+a.right.left.getValue(),start:a.left.right.start,end:a.right.left.end})}),right:a.right.right})),a.right instanceof AST_UnaryPrefix&&"-"==a.right.operator&&a.left.is_number(e)){a=te(AST_Binary,a,{operator:"-",left:a.left,right:a.right.expression});break}if(a.left instanceof AST_UnaryPrefix&&"-"==a.left.operator&&s()&&a.right.is_number(e)){a=te(AST_Binary,a,{operator:"-",left:a.right,right:a.left.expression});break}case"*":u=e.option("unsafe_math");case"&":case"|":case"^":if(a.left.is_number(e)&&a.right.is_number(e)&&s()&&!(a.left instanceof AST_Binary&&a.left.operator!=a.operator&&PRECEDENCE[a.left.operator]>=PRECEDENCE[a.operator])){var g=te(AST_Binary,a,{operator:a.operator,left:a.right,right:a.left});a=a.right instanceof AST_Constant&&!(a.left instanceof AST_Constant)?ne(e,g,a):ne(e,a,g)}u&&a.is_number(e)&&(a.right instanceof AST_Binary&&a.right.operator==a.operator&&(a=te(AST_Binary,a,{operator:a.operator,left:te(AST_Binary,a.left,{operator:a.operator,left:a.left,right:a.right.left,start:a.left.start,end:a.right.left.end}),right:a.right.right})),a.right instanceof AST_Constant&&a.left instanceof AST_Binary&&a.left.operator==a.operator&&(a.left.left instanceof AST_Constant?a=te(AST_Binary,a,{operator:a.operator,left:te(AST_Binary,a.left,{operator:a.operator,left:a.left.left,right:a.right,start:a.left.left.start,end:a.right.end}),right:a.left.right}):a.left.right instanceof AST_Constant&&(a=te(AST_Binary,a,{operator:a.operator,left:te(AST_Binary,a.left,{operator:a.operator,left:a.left.right,right:a.right,start:a.left.right.start,end:a.right.end}),right:a.left.left}))),a.left instanceof AST_Binary&&a.left.operator==a.operator&&a.left.right instanceof AST_Constant&&a.right instanceof AST_Binary&&a.right.operator==a.operator&&a.right.left instanceof AST_Constant&&(a=te(AST_Binary,a,{operator:a.operator,left:te(AST_Binary,a.left,{operator:a.operator,left:te(AST_Binary,a.left.left,{operator:a.operator,left:a.left.right,right:a.right.left,start:a.left.right.start,end:a.right.left.end}),right:a.left.left}),right:a.right.right})));}}if(a.right instanceof AST_Binary&&a.right.operator==a.operator&&(O(a.operator)||"+"==a.operator&&(a.right.left.is_string(e)||a.left.is_string(e)&&a.right.right.is_string(e))))return a.left=te(AST_Binary,a.left,{operator:a.operator,left:a.left,right:a.right.left}),a.right=a.right.right,a.transform(e);var h=a.evaluate(e);return h===a?a:(h=r(h,a).optimize(e),ne(e,h,a))}),G(AST_SymbolExport,function(t){return t}),G(AST_SymbolRef,function(t,s){function e(o){var n;return o.walk(new TreeWalker(function(t){if(t instanceof AST_SymbolRef&&(n=!0),n)return!0})),n}var o=t.resolve_defines(s);if(o)return o.optimize(s);if(!s.option("ie8")&&oe(t)&&(!t.scope.uses_with||!s.find_parent(AST_With)))switch(t.name){case"undefined":return te(AST_Undefined,t).optimize(s);case"NaN":return te(AST_NaN,t).optimize(s);case"Infinity":return te(AST_Infinity,t).optimize(s);}if(s.option("reduce_vars")&&Z(t,s.parent())!==t){var n=t.definition(),i=t.fixed_value(),a=n.single_use;if(a&&(i instanceof AST_Lambda||i instanceof AST_Class))if(n.scope!==t.scope&&(!s.option("reduce_funcs")&&i instanceof AST_Lambda||1==n.escaped||i.inlined))a=!1;else if(w(s,n))a=!1;else if((n.scope!==t.scope||n.orig[0]instanceof AST_SymbolFunarg)&&(a=i.is_constant_expression(t.scope),"f"==a)){var l=t.scope;do(l instanceof AST_Defun||$(l))&&(l.inlined=!0);while(l=l.parent_scope)}if(a&&i){i instanceof AST_DefClass&&(i=te(AST_ClassExpression,i,i)),i instanceof AST_Defun&&(i._squeezed=!0,i=te(AST_Function,i,i));var p;if(0<n.recursive_refs&&i.name instanceof AST_SymbolDefun){p=i.clone(!0);var d=p.name.definition(),f=p.variables.get(p.name.name),c=f&&f.orig[0];c instanceof AST_SymbolLambda||(c=te(AST_SymbolLambda,p.name,p.name),c.scope=p,p.name=c,f=p.def_function(c)),p.walk(new TreeWalker(function(t){t instanceof AST_SymbolRef&&t.definition()===d&&(t.thedef=f,f.references.push(t))}))}else p=i.optimize(s),p===i&&(p=i.clone(!0));return p}if(i&&void 0===n.should_replace){var _;if(i instanceof AST_This)!(n.orig[0]instanceof AST_SymbolFunarg)&&all(n.references,function(t){return n.scope===t.scope})&&(_=i);else{var u=i.evaluate(s);u!==i&&(s.option("unsafe_regexp")||!(u instanceof RegExp))&&(_=r(u,i))}if(_){var g,h=_.optimize(s).print_to_string().length;e(i)?g=function(){var t=_.optimize(s);return t===_?t.clone(!0):t}:(h=z(h,i.print_to_string().length),g=function(){var t=u(_.optimize(s),i);return t===_||t===i?t.clone(!0):t});var m=n.name.length,v=0;s.option("unused")&&!s.exposed(n)&&(v=(m+2+h)/(n.references.length-n.assignments)),n.should_replace=!!(h<=m+v)&&g}else n.should_replace=!1}if(n.should_replace)return n.should_replace()}return t}),G(AST_Undefined,function(n,e){if(e.option("unsafe_undefined")){var t=X(e,"undefined");if(t){var o=te(AST_SymbolRef,n,{name:"undefined",scope:t.scope,thedef:t});return o.is_undefined=!0,o}}var i=Z(e.self(),e.parent());return i&&b(i,n)?n:te(AST_UnaryPrefix,n,{operator:"void",expression:te(AST_Number,n,{value:0})})}),G(AST_Infinity,function(n,e){var t=Z(e.self(),e.parent());return t&&b(t,n)?n:e.option("keep_infinity")&&(!t||b(t,n))&&!X(e,"Infinity")?n:te(AST_Binary,n,{operator:"/",left:te(AST_Number,n,{value:1}),right:te(AST_Number,n,{value:0})})}),G(AST_NaN,function(n,e){var t=Z(e.self(),e.parent());return t&&!b(t,n)||X(e,"NaN")?te(AST_Binary,n,{operator:"/",left:te(AST_Number,n,{value:0}),right:te(AST_Number,n,{value:0})}):n});var j=["+","-","/","*","%",">>","<<",">>>","|","^","&"],I=["*","|","^","&"];G(AST_Assign,function(l,e){function t(t,o){for(var i,n=l.left.definition().scope;(i=e.parent(t++))!==n;)if(i instanceof AST_Try){if(i.bfinally)return!0;if(o&&i.bcatch)return!0}}var o;if(e.option("dead_code")&&l.left instanceof AST_SymbolRef&&(o=l.left.definition()).scope===e.find_parent(AST_Lambda)){var i,n=0,r=l;do if(i=r,r=e.parent(n++),r instanceof AST_Exit){if(t(n,r instanceof AST_Throw))break;if(x(o.scope,[o]))break;return"="==l.operator?l.right:(o.fixed=!1,te(AST_Binary,l,{operator:l.operator.slice(0,-1),left:l.left,right:l.right}).optimize(e))}while(r instanceof AST_Binary&&r.right===i||r instanceof AST_Sequence&&r.tail_node()===i)}return l=l.lift_sequences(e),"="==l.operator&&l.left instanceof AST_SymbolRef&&l.right instanceof AST_Binary&&(l.right.left instanceof AST_SymbolRef&&l.right.left.name==l.left.name&&member(l.right.operator,j)?(l.operator=l.right.operator+"=",l.right=l.right.right):l.right.right instanceof AST_SymbolRef&&l.right.right.name==l.left.name&&member(l.right.operator,I)&&!l.right.left.has_side_effects(e)&&(l.operator=l.right.operator+"=",l.right=l.right.left)),l}),G(AST_DefaultAssign,function(n,e){if(!e.option("evaluate"))return n;var t=n.right.evaluate(e);return void 0===t?n=n.left:t!==n.right&&(t=r(t,n.right),n.right=u(t,n.right)),n}),G(AST_Conditional,function(r,a){function e(t){return t.is_boolean()?t:te(AST_UnaryPrefix,t,{operator:"!",expression:t.negate(a)})}function t(t){return t instanceof AST_True||_&&t instanceof AST_Constant&&t.getValue()||t instanceof AST_UnaryPrefix&&"!"==t.operator&&t.expression instanceof AST_Constant&&!t.expression.getValue()}function o(t){return t instanceof AST_False||_&&t instanceof AST_Constant&&!t.getValue()||t instanceof AST_UnaryPrefix&&"!"==t.operator&&t.expression instanceof AST_Constant&&t.expression.getValue()}if(!a.option("conditionals"))return r;if(r.condition instanceof AST_Sequence){var n=r.condition.expressions.slice();return r.condition=n.pop(),n.push(r),W(r,n)}var i=r.condition.evaluate(a);if(i!==r.condition)return i?(a.warn("Condition always true [{file}:{line},{col}]",r.start),J(a.parent(),a.self(),r.consequent)):(a.warn("Condition always false [{file}:{line},{col}]",r.start),J(a.parent(),a.self(),r.alternative));var s=i.negate(a,first_in_statement(a));ne(a,i,s)===s&&(r=te(AST_Conditional,r,{condition:s,consequent:r.alternative,alternative:r.consequent}));var l=r.condition,p=r.consequent,d=r.alternative;if(l instanceof AST_SymbolRef&&p instanceof AST_SymbolRef&&l.definition()===p.definition())return te(AST_Binary,r,{operator:"||",left:l,right:d});if(p instanceof AST_Assign&&d instanceof AST_Assign&&p.operator==d.operator&&p.left.equivalent_to(d.left)&&(!r.condition.has_side_effects(a)||"="==p.operator&&!p.left.has_side_effects(a)))return te(AST_Assign,r,{operator:p.operator,left:p.left,right:te(AST_Conditional,r,{condition:r.condition,consequent:p.right,alternative:d.right})});var f;if(p instanceof AST_Call&&d.TYPE===p.TYPE&&0<p.args.length&&p.args.length==d.args.length&&p.expression.equivalent_to(d.expression)&&!r.condition.has_side_effects(a)&&!p.expression.has_side_effects(a)&&"number"==typeof(f=function(){for(var r=p.args,e=d.args,t=0,o=r.length;t<o;t++){if(r[t]instanceof AST_Expansion)return;if(!r[t].equivalent_to(e[t])){if(e[t]instanceof AST_Expansion)return;for(var i=t+1;i<o;i++){if(r[i]instanceof AST_Expansion)return;if(!r[i].equivalent_to(e[i]))return}return t}}}())){var c=p.clone();return c.args[f]=te(AST_Conditional,r,{condition:r.condition,consequent:p.args[f],alternative:d.args[f]}),c}if(p instanceof AST_Conditional&&p.alternative.equivalent_to(d))return te(AST_Conditional,r,{condition:te(AST_Binary,r,{left:r.condition,operator:"&&",right:p.condition}),consequent:p.consequent,alternative:d});if(p.equivalent_to(d))return W(r,[r.condition,p]).optimize(a);if(p instanceof AST_Binary&&"||"==p.operator&&p.right.equivalent_to(d))return te(AST_Binary,r,{operator:"||",left:te(AST_Binary,r,{operator:"&&",left:r.condition,right:p.left}),right:d}).optimize(a);var _=a.in_boolean_context();return t(r.consequent)?o(r.alternative)?e(r.condition):te(AST_Binary,r,{operator:"||",left:e(r.condition),right:r.alternative}):o(r.consequent)?t(r.alternative)?e(r.condition.negate(a)):te(AST_Binary,r,{operator:"&&",left:e(r.condition.negate(a)),right:r.alternative}):t(r.alternative)?te(AST_Binary,r,{operator:"||",left:e(r.condition.negate(a)),right:r.consequent}):o(r.alternative)?te(AST_Binary,r,{operator:"&&",left:e(r.condition),right:r.consequent}):r}),G(AST_Boolean,function(n,e){if(e.in_boolean_context())return te(AST_Number,n,{value:+n.value});if(e.option("booleans")){var t=e.parent();return t instanceof AST_Binary&&("=="==t.operator||"!="==t.operator)?(e.warn("Non-strict equality against boolean: {operator} {value} [{file}:{line},{col}]",{operator:t.operator,value:n.value,file:t.start.file,line:t.start.line,col:t.start.col}),te(AST_Number,n,{value:+n.value})):te(AST_UnaryPrefix,n,{operator:"!",expression:te(AST_Number,n,{value:1-n.value})})}return n}),G(AST_Sub,function(a,e){var t=a.expression,o=a.property;if(e.option("properties")){var n=o.evaluate(e);if(n!==o){if("string"==typeof n)if("undefined"==n)n=void 0;else{var s=parseFloat(n);s.toString()==n&&(n=s)}o=a.property=u(o,r(n,o).transform(e));var l=""+n;if(is_identifier_string(l)&&l.length<=o.print_to_string().length+1)return te(AST_Dot,a,{expression:t,property:l}).optimize(e)}}if(Z(a,e.parent()))return a;if(n!==o){var p=a.flatten_object(l,e);p&&(t=a.expression=p.expression,o=a.property=p.property)}if(e.option("properties")&&e.option("side_effects")&&o instanceof AST_Number&&t instanceof AST_Array){var d=o.getValue(),f=t.elements;FLATTEN:if(d in f){for(var s,c=!0,_=[],u=f.length;--u>d;)s=f[u].drop_side_effect_free(e),s&&(_.unshift(s),c&&s.has_side_effects(e)&&(c=!1));var g=f[d];if(g instanceof AST_Expansion)break FLATTEN;for(g=g instanceof AST_Hole?te(AST_Undefined,g):g,c||_.unshift(g);0<=--u;){var s=f[u];if(s instanceof AST_Expansion)break FLATTEN;s=s.drop_side_effect_free(e),s?_.unshift(s):d--}return c?(_.push(g),W(a,_).optimize(e)):te(AST_Sub,a,{expression:te(AST_Array,t,{elements:_}),property:te(AST_Number,o,{value:d})})}}var i=a.evaluate(e);return i===a?a:(i=r(i,a).optimize(e),ne(e,i,a))}),AST_Lambda.DEFMETHOD("contains_this",function(){var n,e=this;return e.walk(new TreeWalker(function(t){return!!n||(t instanceof AST_This?n=!0:t!==e&&t instanceof AST_Scope&&!(t instanceof AST_Arrow)||void 0)})),n}),AST_PropAccess.DEFMETHOD("flatten_object",function(r,e){if(e.option("properties")){var t=e.option("unsafe_arrows")&&6<=e.option("ecma"),o=this.expression;if(o instanceof AST_Object)for(var n,a=o.properties,s=a.length;0<=--s;)if(n=a[s],""+(n instanceof AST_ConciseMethod?n.key.name:n.key)==r){if(!all(a,function(o){return o instanceof AST_ObjectKeyVal||t&&o instanceof AST_ConciseMethod&&!o.is_generator}))break;var l=n.value;if((l instanceof AST_Accessor||l instanceof AST_Function)&&!(e.parent()instanceof AST_New)&&l.contains_this())break;return te(AST_Sub,this,{expression:te(AST_Array,o,{elements:a.map(function(n){var e=n.value;e instanceof AST_Accessor&&(e=te(AST_Function,e,e));var t=n.key;return t instanceof AST_Node&&!(t instanceof AST_SymbolMethod)?W(n,[t,e]):e})}),property:te(AST_Number,this,{value:s})})}}}),G(AST_Dot,function(s,e){("arguments"==s.property||"caller"==s.property)&&e.warn("Function.protoype.{prop} not supported [{file}:{line},{col}]",{prop:s.property,file:s.start.file,line:s.start.line,col:s.start.col});var t=s.resolve_defines(e);if(t)return t.optimize(e);if(Z(s,e.parent()))return s;if(e.option("unsafe_proto")&&s.expression instanceof AST_Dot&&"prototype"==s.expression.property){var o=s.expression.expression;if(oe(o))switch(o.name){case"Array":s.expression=te(AST_Array,s.expression,{elements:[]});break;case"Function":s.expression=te(AST_Function,s.expression,{argnames:[],body:[]});break;case"Number":s.expression=te(AST_Number,s.expression,{value:0});break;case"Object":s.expression=te(AST_Object,s.expression,{properties:[]});break;case"RegExp":s.expression=te(AST_RegExp,s.expression,{value:/t/});break;case"String":s.expression=te(AST_String,s.expression,{value:""});}}var i=s.flatten_object(s.property,e);if(i)return i.optimize(e);var n=s.evaluate(e);return n===s?s:(n=r(n,s).optimize(e),ne(e,n,s))}),G(AST_Array,e),G(AST_Object,e),G(AST_RegExp,e),G(AST_Return,function(n,e){return n.value&&o(n.value,e)&&(n.value=null),n}),G(AST_Arrow,function(n,e){if(n.body instanceof AST_Node||i(n.body,e),e.option("arrows")&&1==n.body.length&&n.body[0]instanceof AST_Return){var t=n.body[0].value;n.body=t?t:[]}return n}),G(AST_Function,function(n,e){if(i(n.body,e),e.option("unsafe_arrows")&&6<=e.option("ecma")&&!n.name&&!n.is_generator&&!n.uses_arguments&&!n.uses_eval){var t=!1;if(n.walk(new TreeWalker(function(o){return!!t||(o instanceof AST_This?(t=!0,!0):void 0)})),!t)return te(AST_Arrow,n,n).optimize(e)}return n}),G(AST_Class,function(t){return t}),G(AST_Yield,function(n,e){return n.expression&&!n.is_star&&o(n.expression,e)&&(n.expression=null),n}),G(AST_VarDef,function(n,e){var t=e.option("global_defs");return t&&HOP(t,n.name.name)&&e.warn("global_defs "+n.name.name+" redefined [{file}:{line},{col}]",n.start),n}),G(AST_TemplateString,function(r,e){if(!e.option("evaluate")||e.parent()instanceof AST_PrefixedTemplateString)return r;for(var t,o=[],n=0;n<r.segments.length;n++){if(t=r.segments[n],t instanceof AST_Node){var a=t.evaluate(e);if(a!==t&&(a+"").length<=t.print_to_string().length+3){o[o.length-1].value=o[o.length-1].value+a+r.segments[++n].value;continue}}o.push(t)}return r.segments=o,1==o.length?te(AST_String,r,o[0]):r}),G(AST_PrefixedTemplateString,function(t){return t}),G(AST_ObjectProperty,E),G(AST_ConciseMethod,function(n,e){if(E(n,e),e.option("arrows")&&e.parent()instanceof AST_Object&&!n.value.uses_arguments&&!n.value.uses_eval&&1==n.value.body.length&&n.value.body[0]instanceof AST_Return&&n.value.body[0].value&&!n.value.contains_this()){var t=te(AST_Arrow,n.value,n.value);return t.async=n.async,t.is_generator=n.is_generator,te(AST_ObjectKeyVal,n,{key:n.key instanceof AST_SymbolMethod?n.key.name:n.key,value:t,quote:n.quote})}return n}),G(AST_ObjectKeyVal,function(r,e){E(r,e);var t=e.option("unsafe_methods");if(t&&6<=e.option("ecma")&&(!(t instanceof RegExp)||t.test(r.key+""))){var o=r.key,i=r.value,n=i instanceof AST_Arrow&&Array.isArray(i.body)&&!i.contains_this();if((n||i instanceof AST_Function)&&!i.name)return te(AST_ConciseMethod,r,{async:i.async,is_generator:i.is_generator,key:o instanceof AST_Node?o:te(AST_SymbolMethod,r,{name:o}),value:te(AST_Accessor,i,i),quote:r.quote})}return r})}();
|
