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n=n.slice(),(t=this.clone()).right=n.pop(),n.push(t),Le(this,n);if(0<o)return(t=this.clone()).right=Le(this.right,n.slice(o)),(n=n.slice(0,o)).push(t),Le(this,n)}return this}),Ni=L("indexOf lastIndexOf"),Ii=L("== === != !== * & | ^"),n(Ce,function(t,a){if(!Ii[t.operator]||!t.right.is_constant()||t.left.is_constant()||t.left instanceof Ce&&Xt[t.left.operator]>=Xt[t.operator]||w(),a.option("sequences")){var e=t.lift_sequences(a);if(e!==t)return e.optimize(a)}if(a.option("assignments")&&xi[t.operator]){e=t.right;if(t.left instanceof Ie&&e instanceof Fe&&"="==e.operator&&t.left.equivalent_to(e.left))return t.right=e.right,e.right=t,e}if(a.option("comparisons"))switch(t.operator){case"===":case"!==":if(no(t.left,a)&&t.right.is_defined(a))return ye.warn("Expression always defined [{file}:{line},{col}]",t.start),Le(t,[t.right,Re("==="==t.operator?Nt:It,t)]).optimize(a);var n=!0;(t.left.is_string(a)&&t.right.is_string(a)||t.left.is_number(a)&&t.right.is_number(a)||t.left.is_boolean(a)&&t.right.is_boolean(a)||oa(a,t.left)&&t.left.equivalent_to(t.right))&&(t.operator=t.operator.slice(0,2));case"==":case"!=":if(!n&&no(t.left,a))t.left=Re(Mt,t.left);else if(a.option("typeofs")&&t.left instanceof fe&&"undefined"==t.left.value&&t.right instanceof ze&&"typeof"==t.right.operator)((i=t.right.expression)instanceof Ie?!i.is_declared(a):i instanceof $e&&a.option("ie"))||(t.right=i,t.left=Re(Ft,t.left).optimize(a),2==t.operator.length&&(t.operator+="="));else if(t.left instanceof Ie&&t.right instanceof Ie&&t.left.definition()===t.right.definition()&&ia(t.left))return Re("="==t.operator[0]?It:Nt,t).optimize(a);break;case"&&":case"||":var i;if((i=(f=(f=t.left).operator==t.operator?f.right:f).right)instanceof Fe&&"="==i.operator&&(i=i.left),f instanceof Ce&&f.operator==("&&"==t.operator?"!==":"===")&&t.right instanceof Ce&&f.operator==t.right.operator&&(no(f.left,a)&&t.right.left instanceof Mt||f.left instanceof Mt&&no(t.right.left,a))&&!i.has_side_effects(a)&&i.equivalent_to(t.right.right))return f.operator=f.operator.slice(0,-1),f.left=Re(Mt,t),t.left}var r,o=!1,s=a.parent();if(a.option("booleans")){var f=t.left;if(xi[t.operator]&&!f.has_side_effects(a)){if(f.equivalent_to(t.right))return Nr(0,s,a.self(),f).optimize(a);Bo(a,f)}o=a.in_boolean_context()}if(o)switch(t.operator){case"+":var c=t.left.evaluate(a,!0);if(c&&"string"==typeof c||(c=t.right.evaluate(a,!0))&&"string"==typeof c){ye.warn("+ in boolean context always true [{file}:{line},{col}]",t.start);c=[];if(t.left.evaluate(a)instanceof ye&&c.push(t.left),t.right.evaluate(a)instanceof ye&&c.push(t.right),c.length<2)return c.push(Re(It,t)),Le(t,c).optimize(a);t.truthy=!0}break;case"==":if(t.left instanceof fe&&""==t.left.value&&t.right.is_string(a))return Re(ze,t,{operator:"!",expression:t.right}).optimize(a);break;case"!=":if(t.left instanceof 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Ce&&t.operator==t.right.operator&&(t.left.is_string(a)&&t.right.is_string(a)||t.right.left.is_string(a)&&(t.left.is_constant()||!t.right.right.has_side_effects(a)))&&aa(t,a)}if(a.option("evaluate")){var u=!0;switch(t.operator){case"&&":if(!(d=Lo(a,t.left)))return ye.warn("Condition left of && always false [{file}:{line},{col}]",t.start),Nr(0,s,a.self(),t.left).optimize(a);if(!(d instanceof ye))return ye.warn("Condition left of && always true [{file}:{line},{col}]",t.start),Le(t,[t.left,t.right]).optimize(a);if(t.right.evaluate(a,!0)){if((o||"&&"==s.operator&&s.left===a.self())&&!(t.right.evaluate(a)instanceof ye))return ye.warn("Dropping side-effect-free && [{file}:{line},{col}]",t.start),t.left.optimize(a)}else{if(o&&!(t.right.evaluate(a)instanceof ye))return ye.warn("Boolean && always false [{file}:{line},{col}]",t.start),Le(t,[t.left,Re(Nt,t)]).optimize(a);t.falsy=!0}if("||"==t.left.operator)if(!(p=Lo(a,t.left.right)))return Re(Me,t,{condition:t.left.left,consequent:t.right,alternative:t.left.right}).optimize(a);break;case"??":var l=!0;case"||":var p,d=Lo(a,t.left,l);if(l?null==d:!d)return ye.warn("Condition left of {operator} always {value} [{file}:{line},{col}]",{operator:t.operator,value:l?"nulish":"false",file:t.start.file,line:t.start.line,col:t.start.col}),Le(t,[t.left,t.right]).optimize(a);if(!(d instanceof ye))return ye.warn("Condition left of {operator} always {value} [{file}:{line},{col}]",{operator:t.operator,value:l?"defined":"true",file:t.start.file,line:t.start.line,col:t.start.col}),Nr(0,s,a.self(),t.left).optimize(a);if(l||!(d=t.right.evaluate(a,!0))||d instanceof ye){if((o||"||"==s.operator&&s.left===a.self())&&!t.right.evaluate(a))return ye.warn("Dropping side-effect-free {operator} [{file}:{line},{col}]",{operator:t.operator,file:t.start.file,line:t.start.line,col:t.start.col}),t.left.optimize(a)}else{if(o&&!(t.right.evaluate(a)instanceof ye))return ye.warn("Boolean || always true 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