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5736 lines (4869 loc) · 212 KB
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/* In esbuild scripts/terser-tests.js
* Under `Run esbuild as a minifier`
*
* ```
if (test.expect_stdout) {
const expected = test.expect_stdout.split('\n').filter((s) => s.trim().length > 0).map((s) => JSON.stringify(s)).join(', ');
const prepend_code = test.prepend_code ? `const prepend = ${JSON.stringify(test.prepend_code)};` : '';
const run_code = test.prepend_code ? `run(code, expected, prepend);` : `run(code, expected);`;
console.log(`
test('${test.name}', () => {
${prepend_code}
const code = ${JSON.stringify(ast_as_string)};
const expected = [${expected}];
${run_code}
});
`)
}
* ```
**/
import { expect, test, vi } from 'vitest';
import { minify } from '../index';
import { run_code } from './sandbox';
function run(input: string, expected: string[], prepend_code?: string) {
const consoleMock = vi.spyOn(console, 'log').mockImplementation(() => undefined);
try {
const minified = minify('test.mjs', input).code;
expect(minified).not.toBeFalsy();
// Use `consoleMock` instead of the returned output.
const _ = run_code(minified, prepend_code);
const calls = consoleMock.mock.calls.map((args) => args.map(convert).join(' '));
expect(calls).toStrictEqual(expected);
} finally {
consoleMock.mockReset();
}
}
function convert(arg: any) {
if (arg == null) {
return 'undefined';
}
if (typeof arg == 'string') {
return arg;
}
if (arg && arg.length >= 0) {
return JSON.stringify(arg);
}
return arg;
}
test('replace_index', () => {
const code =
'var arguments=[];console.log(arguments[0]);(function(){console.log(arguments[1],arguments["1"],arguments["foo"])})("bar",42);(function(a,b){console.log(arguments[1],arguments["1"],arguments["foo"])})("bar",42);(function(arguments){console.log(arguments[1],arguments["1"],arguments["foo"])})("bar",42);(function(){var arguments;console.log(arguments[1],arguments["1"],arguments["foo"])})("bar",42);';
const expected = ['undefined', '42 42 undefined', '42 42 undefined', 'a a undefined', '42 42 undefined'];
run(code, expected);
});
test('replace_index_strict', () => {
const code =
'"use strict";(function(){console.log(arguments[1],arguments["1"],arguments["foo"])})("bar",42);(function(a,b){console.log(arguments[1],arguments["1"],arguments["foo"])})("bar",42);';
const expected = ['42 42 undefined', '42 42 undefined'];
run(code, expected);
});
test('replace_index_keep_fargs', () => {
const code =
'var arguments=[];console.log(arguments[0]);(function(){console.log(arguments[1],arguments["1"],arguments["foo"])})("bar",42);(function(a,b){console.log(arguments[1],arguments["1"],arguments["foo"])})("bar",42);(function(arguments){console.log(arguments[1],arguments["1"],arguments["foo"])})("bar",42);(function(){var arguments;console.log(arguments[1],arguments["1"],arguments["foo"])})("bar",42);';
const expected = ['undefined', '42 42 undefined', '42 42 undefined', 'a a undefined', '42 42 undefined'];
run(code, expected);
});
test('replace_index_keep_fargs_strict', () => {
const code =
'"use strict";(function(){console.log(arguments[1],arguments["1"],arguments["foo"])})("bar",42);(function(a,b){console.log(arguments[1],arguments["1"],arguments["foo"])})("bar",42);';
const expected = ['42 42 undefined', '42 42 undefined'];
run(code, expected);
});
test('modified', () => {
const code =
'(function(a,b){var c=arguments[0];var d=arguments[1];var a="foo";b++;arguments[0]="moo";arguments[1]*=2;console.log(a,b,c,d,arguments[0],arguments[1])})("bar",42);';
const expected = ['moo 86 bar 42 moo 86'];
run(code, expected);
});
test('modified_strict', () => {
const code =
'"use strict";(function(a,b){var c=arguments[0];var d=arguments[1];var a="foo";b++;arguments[0]="moo";arguments[1]*=2;console.log(a,b,c,d,arguments[0],arguments[1])})("bar",42);';
const expected = ['foo 43 bar 42 moo 84'];
run(code, expected);
});
test('arguments_in_arrow_func_1', () => {
const code =
'(function(a,b){console.log(arguments[0],a,arguments[1],arguments[3],b,arguments[2])})("bar",42,false);(function(a,b){(()=>{console.log(arguments[0],a,arguments[1],arguments[3],b,arguments[2])})(10,20,30,40)})("bar",42,false);';
const expected = ['bar bar 42 undefined 42 false', 'bar bar 42 undefined 42 false'];
run(code, expected);
});
test('arguments_in_arrow_func_2', () => {
const code =
'(function(a,b){console.log(arguments[0],a,arguments[1],arguments[3],b,arguments[2])})("bar",42,false);(function(a,b){(()=>{console.log(arguments[0],a,arguments[1],arguments[3],b,arguments[2])})(10,20,30,40)})("bar",42,false);';
const expected = ['bar bar 42 undefined 42 false', 'bar bar 42 undefined 42 false'];
run(code, expected);
});
test('arguments_and_destructuring_1', () => {
const code = '(function({d:d}){console.log(a="foo",arguments[0].d)})({d:"Bar"});';
const expected = ['foo Bar'];
run(code, expected);
});
test('arguments_and_destructuring_2', () => {
const code = '(function(a,{d:d}){console.log(a="foo",arguments[0])})("baz",{d:"Bar"});';
const expected = ['foo baz'];
run(code, expected);
});
test('arguments_and_destructuring_3', () => {
const code = '(function({d:d},a){console.log(a="foo",arguments[0].d)})({d:"Bar"},"baz");';
const expected = ['foo Bar'];
run(code, expected);
});
test('duplicate_parameter_with_arguments', () => {
const code = '(function(a,a){console.log(a="foo",arguments[0])})("baz","Bar");';
const expected = ['foo baz'];
run(code, expected);
});
test('for_loop', () => {
const code =
'function f0(){var a=[1,2,3];var b=0;for(var i=0;i<a.length;i++)b+=a[i];return b}function f1(){var a=[1,2,3];var b=0;for(var i=0,len=a.length;i<len;i++)b+=a[i];return b}function f2(){var a=[1,2,3];for(var i=0;i<a.length;i++)a[i]++;return a[2]}console.log(f0(),f1(),f2());';
const expected = ['6 6 4'];
run(code, expected);
});
test('index', () => {
const code = 'var a=[1,2];console.log(a[0],a[1]);';
const expected = ['1 2'];
run(code, expected);
});
test('length', () => {
const code = 'var a=[1,2];console.log(a.length);';
const expected = ['2'];
run(code, expected);
});
test('index_length', () => {
const code = 'var a=[1,2];console.log(a[0],a.length);';
const expected = ['1 2'];
run(code, expected);
});
test('arrow_unused', () => {
const code =
'top=>dog;let fn=a=>{console.log(a*a)};let u=(x,y)=>x-y+g;(()=>{console.log("0")})();!function(x){(()=>{console.log("1")})();let unused=x=>{console.log(x)};let baz=e=>e+e;console.log(baz(x))}(1);fn(3);';
const expected = ['0', '1', '2', '9'];
run(code, expected);
});
test('arrow_unused_toplevel', () => {
const code =
'top=>dog;let fn=a=>{console.log(a*a)};let u=(x,y)=>x-y+g;(()=>{console.log("0")})();!function(x){(()=>{console.log("1")})();let unused=x=>{console.log(x)};let baz=e=>e+e;console.log(baz(x))}(1);fn(3);';
const expected = ['0', '1', '2', '9'];
run(code, expected);
});
test.skip('async_identifiers', () => {
const code =
'var async=function(x){console.log("async",x)};var await=function(x){console.log("await",x)};async(1);await(2);';
const expected = ['async 1', 'await 2'];
run(code, expected);
});
test('issue_2105_1', () => {
const code =
'!function(factory){factory()}((function(){return function(fn){fn()().prop()}((function(){function bar(){var quux=function(){console.log("PASS")},foo=function(){console.log;quux()};return{prop:foo}}return bar}))}));';
const expected = ['PASS'];
run(code, expected);
});
test('issue_2105_2', () => {
const code =
'(factory=>{factory()})(()=>(fn=>{fn()().prop()})(()=>{let bar=()=>{var quux=()=>{console.log("PASS")},foo=()=>{console.log;quux()};return{prop:foo}};return bar}));';
const expected = ['PASS'];
run(code, expected);
});
test('issue_2136_2', () => {
const code = 'function f(x){console.log(x)}!function(a,...b){f(b[0])}(1,2,3);';
const expected = ['2'];
run(code, expected);
});
test('issue_2136_3', () => {
const code = 'function f(x){console.log(x)}!function(a,...b){f(b[0])}(1,2,3);';
const expected = ['2'];
run(code, expected);
});
test('issue_2084', () => {
const code =
'var c=0;!function(){!function(c){c=1+c;var c=0;function f14(a_1){if(c=1+c,0!==23..toString())c=1+c,a_1&&(a_1[0]=0)}f14()}(-1)}();console.log(c);';
const expected = ['0'];
run(code, expected);
});
test('concise_methods_with_computed_property2', () => {
const code = 'var foo={[[1]](v){return v}};console.log(foo[[1]]("PASS"));';
const expected = ['PASS'];
run(code, expected);
});
test('issue_2271', () => {
const code =
'var Foo=function(){};Foo.prototype.set=function(value){this.value=value;return this};Foo.prototype.print=function(){console.log(this.value)};(new Foo).set("PASS").print();';
const expected = ['PASS'];
run(code, expected);
});
test('concise_method_with_super', () => {
const code = 'var o={f:"FAIL",g(){return super.f}};Object.setPrototypeOf(o,{f:"PASS"});console.log(o.g());';
const expected = ['PASS'];
run(code, expected);
});
test('issue_3092a', () => {
const code = 'console.log({*gen(x){return yield x.toUpperCase(),2}}.gen("pass").next().value);';
const expected = ['PASS'];
run(code, expected);
});
test('issue_3092b', () => {
const code =
'var obj={async bar(x){return await x,2},*gen(x){return yield x.toUpperCase(),2}};console.log(obj.gen("pass").next().value);';
const expected = ['PASS'];
run(code, expected);
});
test('async_inline', () => {
const code =
'(async function(){return await 3})();(async function(x){await console.log(x)})(4);function invoke(x,y){return x(y)}invoke((async function(){return await 1}));invoke((async function(x){await console.log(x)}),2);function top(){console.log("top")}top();async function async_top(){console.log("async_top")}async_top();';
const expected = ['4', '2', 'top', 'async_top'];
run(code, expected);
});
test.skip('async_identifiers', () => {
const code =
'var async=function(x){console.log("async",x)};var await=function(x){console.log("await",x)};async(1);await(2);';
const expected = ['async 1', 'await 2'];
run(code, expected);
});
test.skip('async_shorthand_property', () => {
const code =
'function print(o){console.log(o.async+" "+o.await)}var async="Async",await="Await";print({async:async});print({await:await});print({async:async,await:await});print({await:await,async:async});print({async:async});print({await:await});print({async:async,await:await});print({await:await,async:async});';
const expected = [
'Async undefined',
'undefined Await',
'Async Await',
'Async Await',
'Async undefined',
'undefined Await',
'Async Await',
'Async Await',
];
run(code, expected);
});
test('issue_3079', () => {
const code =
'async=>1;var async=async=>async;console.log(async(1));async=async=>async;console.log(async(2));console.log({m:async=>async?"3":"4"}.m(true));';
const expected = ['1', '2', '3'];
run(code, expected);
});
test('issue_87', () => {
const code = 'function async(async){console.log(async[0],async.prop)}async({0:1,prop:2});';
const expected = ['1 2'];
run(code, expected);
});
test('regression_block_scope_resolves', () => {
const code =
'(function(){if(1){let x;const y=1;class Zee{}}if(1){let ex;const why=2;class Zi{}}console.log(typeof x,typeof y,typeof Zee,typeof ex,typeof why,typeof Zi)})();';
const expected = ['undefined undefined undefined undefined undefined undefined'];
run(code, expected);
});
test('switch_block_scope_mangler', () => {
const code =
'var fn=function(code){switch(code){case 1:let apple=code+1;let dog=code+4;console.log(apple,dog);break;case 2:let banana=code+2;console.log(banana);break;default:let cat=code+3;console.log(cat)}};fn(1);fn(2);fn(3);';
const expected = ['2 5', '4', '6'];
run(code, expected);
});
test('issue_241', () => {
const code =
'var a={};(function(global){function fail(o){var result={};function inner(){return outer({one:o.one,two:o.two})}result.inner=function(){return inner()};return result}function outer(o){var ret;if(o){ret=o.one}else{ret=o.two}return ret}global.fail=fail})(a);var b=a.fail({one:"PASS"});console.log(b.inner());';
const expected = ['PASS'];
run(code, expected);
});
test('issue_334', () => {
const code =
'(function(A){(function(){doPrint()})();function doPrint(){print(A)}})("Hello World!");function print(A){if(!A.x){console.log(A)}}';
const expected = ['Hello World!'];
run(code, expected);
});
test('issue_508', () => {
const code =
'const foo=()=>{let a;{let b=[];{console.log()}a=b;{let c=a;let b=123456;console.log(b);c.push(b)}}};foo();';
const expected = ['', '123456'];
run(code, expected);
});
test('issue_1664', () => {
const code = 'var a=1;function f(){if(undefined)a=2;{function undefined(){}undefined()}}f();console.log(a);';
const expected = ['1'];
run(code, expected);
});
test('basic_class_properties', () => {
const code =
'class A{static foo;bar;static fil="P";another="A";toString(){if("bar"in this&&"foo"in A){return A.fil+this.another}}}console.log((new A).toString());';
const expected = ['PA'];
run(code, expected);
});
test('computed_class_properties', () => {
const code = 'const x="FOO";const y="BAR";class X{[x]="PASS";static[y]}if("BAR"in X){console.log((new X)[x])}';
const expected = ['PASS'];
run(code, expected);
});
test('static_class_properties_side_effects', () => {
const code = 'class A{foo=console.log("PASS2");static bar=console.log("PASS1")}new A;';
const expected = ['PASS1', 'PASS2'];
run(code, expected);
});
test('class_expression_properties_side_effects', () => {
const code = 'global.side=()=>{console.log("PASS")};(class{static foo=side();[side()](){}[side()]=4});';
const expected = ['PASS', 'PASS', 'PASS'];
run(code, expected);
});
test('static_property_side_effects', () => {
const code = 'let x="FAIL";class cls{static[x="PASS"]}console.log(x);class cls2{static[console.log("PASS")]}';
const expected = ['PASS', 'PASS'];
run(code, expected);
});
test('static_means_execution', () => {
const code =
'let x=0;class NoProps{}class WithProps{prop=x=x===1?"PASS":"FAIL"}class WithStaticProps{static prop=x=x===0?1:"FAIL"}new NoProps;new WithProps;new WithStaticProps;console.log(x);';
const expected = ['PASS'];
run(code, expected);
});
test('collapse_vars_seq', () => {
const code = 'var f1=function(x,y){var a,b,r=x+y,q=r*r,z=q-r;a=z,b=7;return a+b};console.log(f1(1,2));';
const expected = ['13'];
run(code, expected);
});
test('collapse_vars_throw', () => {
const code = 'var f1=function(x,y){var a,b,r=x+y,q=r*r,z=q-r;a=z,b=7;throw a+b};try{f1(1,2)}catch(e){console.log(e)}';
const expected = ['13'];
run(code, expected);
});
test('collapse_vars_unary_2', () => {
const code =
'global.leak=n=>console.log(n);global.num=4;let counter=-1;for(const i in[0,1,2,3,4,5]){counter++,i==num&&leak(counter)}';
const expected = ['4'];
run(code, expected);
});
test('issue_1631_1', () => {
const code = 'var pc=0;function f(x){pc=200;return 100}function x(){var t=f();pc+=t;return pc}console.log(x());';
const expected = ['300'];
run(code, expected);
});
test('issue_1631_2', () => {
const code = 'var a=0,b=1;function f(){a=2;return 4}function g(){var t=f();b=a+t;return b}console.log(g());';
const expected = ['6'];
run(code, expected);
});
test('issue_1631_3', () => {
const code = 'function g(){var a=0,b=1;function f(){a=2;return 4}var t=f();b=a+t;return b}console.log(g());';
const expected = ['6'];
run(code, expected);
});
test('reduce_vars_assign', () => {
const code = '!function(){var a=1;a=[].length,console.log(a)}();';
const expected = ['0'];
run(code, expected);
});
test('var_defs', () => {
const code = 'var f1=function(x,y){var a,b,r=x+y,q=r*r,z=q-r,a=z,b=7;console.log(a+b)};f1("1",0);';
const expected = ['97'];
run(code, expected);
});
test('switch_case_2', () => {
const code = 'var a=1,b=2;switch(b++){case b:var c=a;var a;break}console.log(a);';
const expected = ['1'];
run(code, expected);
});
test('switch_case_3', () => {
const code = 'var a=1,b=2;switch(a){case a:var b;break;case b:break}console.log(b);';
const expected = ['2'];
run(code, expected);
});
test('modified', () => {
const code =
'function f1(b){var a=b;return b+a}function f2(b){var a=b;return b+++a}function f3(b){var a=b++;return b+a}function f4(b){var a=b++;return b+++a}function f5(b){var a=function(){return b}();return b+++a}console.log(f1(1),f2(1),f3(1),f4(1),f5(1));';
const expected = ['2 2 3 3 2'];
run(code, expected);
});
test('issue_1858', () => {
const code = 'console.log(function(x){var a={},b=a.b=x;return a.b+b}(1));';
const expected = ['2'];
run(code, expected);
});
test('chained_3', () => {
const code = 'console.log(function(a,b){var c=a,c=b;b++;return c}(1,2));';
const expected = ['2'];
run(code, expected);
});
test('unused_orig', () => {
const code =
'var a=1;console.log(function(b){var a;var c=b;for(var d in c){var a;return--b+c[0]}try{}catch(e){--b+a}a&&a.NaN}([2]),a);';
const expected = ['3 1'];
run(code, expected);
});
test('compound_assignment', () => {
const code = 'var a;a=1;a+=a+2;console.log(a);';
const expected = ['4'];
run(code, expected);
});
test('issue_2187_1', () => {
const code = 'var a=1;!function(foo){foo();var a=2;console.log(a)}((function(){console.log(a)}));';
const expected = ['1', '2'];
run(code, expected);
});
test('issue_2187_2', () => {
const code = 'var b=1;console.log(function(a){return a&&++b}(b--));';
const expected = ['1'];
run(code, expected);
});
test('issue_2187_3', () => {
const code = 'var b=1;console.log(function(a){return a&&++b}(b--));';
const expected = ['1'];
run(code, expected);
});
test('issue_2203_1', () => {
const code =
'a="FAIL";console.log({a:"PASS",b:function(){return function(c){return c.a}((String,Object,this))}}.b());';
const expected = ['PASS'];
run(code, expected);
});
test('issue_2203_2', () => {
const code =
'a="PASS";console.log({a:"FAIL",b:function(){return function(c){return c.a}((String,Object,function(){return this}()))}}.b());';
const expected = ['PASS'];
run(code, expected);
});
test('issue_2203_3', () => {
const code =
'a="FAIL";console.log({a:"PASS",b:function(){return function(c){return c.a}((String,Object,(()=>this)()))}}.b());';
const expected = ['PASS'];
run(code, expected);
});
test('issue_2203_4', () => {
const code = 'a="FAIL";console.log({a:"PASS",b:function(){return(c=>c.a)((String,Object,(()=>this)()))}}.b());';
const expected = ['PASS'];
run(code, expected);
});
test('duplicate_argname', () => {
const code = 'function f(){return"PASS"}console.log(function(a,a){f++;return a}("FAIL",f()));';
const expected = ['PASS'];
run(code, expected);
});
test('issue_2298', () => {
const code =
'!function(){function f(){var a=undefined;var undefined=a++;try{!function g(b){b[1]="foo"}();console.log("FAIL")}catch(e){console.log("PASS")}}f()}();';
const expected = ['PASS'];
run(code, expected);
});
test('issue_2313_1', () => {
const code =
'var a=0,b=0;var foo={get c(){a++;return 42},set c(c){b++},d:function(){this.c++;if(this.c)console.log(a,b)}};foo.d();';
const expected = ['2 1'];
run(code, expected);
});
test('issue_2313_2', () => {
const code = 'var c=0;!function a(){a&&c++;var a=0;a&&c++}();console.log(c);';
const expected = ['0'];
run(code, expected);
});
test('issue_2319_1', () => {
const code = 'console.log(function(a){return a}(!function(){return this}()));';
const expected = ['false'];
run(code, expected);
});
test('issue_2319_2', () => {
const code = 'console.log(function(a){"use strict";return a}(!function(){return this}()));';
const expected = ['false'];
run(code, expected);
});
test('issue_2319_3', () => {
const code = '"use strict";console.log(function(a){return a}(!function(){return this}()));';
const expected = ['true'];
run(code, expected);
});
test('issue_2365', () => {
const code =
'console.log(function(a){var b=a.f;a.f++;return b}({f:1}));console.log(function(){var a={f:1},b=a.f;a.f++;return b}());console.log({f:1,g:function(){var b=this.f;this.f++;return b}}.g());';
const expected = ['1', '1', '1'];
run(code, expected);
});
test('issue_2364_1', () => {
const code =
'function inc(obj){return obj.count++}function foo(){var first=arguments[0];var result=inc(first);return foo.amount=first.count,result}var data={count:0};var answer=foo(data);console.log(foo.amount,answer);';
const expected = ['1 0'];
run(code, expected);
});
test('issue_2364_3', () => {
const code =
'function inc(obj){return obj.count++}function foo(bar){var result=inc(bar);return foo.amount=bar.count,result}var data={count:0};var answer=foo(data);console.log(foo.amount,answer);';
const expected = ['1 0'];
run(code, expected);
});
test('issue_2364_4', () => {
const code =
'function inc(obj){return obj.count++}function foo(bar,baz){var result=inc(bar);return foo.amount=baz.count,result}var data={count:0};var answer=foo(data,data);console.log(foo.amount,answer);';
const expected = ['1 0'];
run(code, expected);
});
test('issue_2364_6', () => {
const code = 'function f(a,b){var c=a.p;b.p="FAIL";return c}var o={p:"PASS"};console.log(f(o,o));';
const expected = ['PASS'];
run(code, expected);
});
test('issue_2364_7', () => {
const code =
'function f(a,b){var c=a.p;b.f();return c}var o={p:"PASS",f:function(){this.p="FAIL"}};console.log(f(o,o));';
const expected = ['PASS'];
run(code, expected);
});
test('issue_2364_8', () => {
const code =
'function f(a,b,c){var d=a[b.f=function(){return"PASS"}];return c.f(d)}var o={f:function(){return"FAIL"}};console.log(f({},o,o));';
const expected = ['PASS'];
run(code, expected);
});
test('issue_2364_9', () => {
const code =
'function f(a,b){var d=a();return b.f(d)}var o={f:function(){return"FAIL"}};console.log(f((function(){o.f=function(){return"PASS"}}),o));';
const expected = ['PASS'];
run(code, expected);
});
test('pure_getters_chain', () => {
const code =
'function o(t,r){var a=t[1],s=t[2],o=t[3],i=t[5];return a<=23&&s<=59&&o<=59&&(!r||i)}console.log(o([,23,59,59,,42],1));';
const expected = ['42'];
run(code, expected);
});
test('conditional_1', () => {
const code =
'function f(a,b){var c="";var d=b?">":"<";if(a)c+="=";return c+=d}console.log(f(0,0),f(0,1),f(1,0),f(1,1));';
const expected = ['< > =< =>'];
run(code, expected);
});
test('conditional_2', () => {
const code = 'function f(a,b){var c=a+1,d=a+2;return b?c:d}console.log(f(3,0),f(4,1));';
const expected = ['5 5'];
run(code, expected);
});
test('issue_2425_1', () => {
const code = 'var a=8;(function(b){b.toString()})(--a,a|=10);console.log(a);';
const expected = ['15'];
run(code, expected);
});
test('issue_2425_2', () => {
const code = 'var a=8;(function(b,c){b.toString()})(--a,a|=10);console.log(a);';
const expected = ['15'];
run(code, expected);
});
test('issue_2425_3', () => {
const code = 'var a=8;(function(b,b){b.toString()})(--a,a|=10);console.log(a);';
const expected = ['15'];
run(code, expected);
});
test('issue_2437_1', () => {
const code =
'function XMLHttpRequest(){this.onreadystatechange="PASS"}global.xhrDesc={};function foo(){return bar()}function bar(){if(xhrDesc){var req=new XMLHttpRequest;var result=req.onreadystatechange;Object.defineProperty(XMLHttpRequest.prototype,"onreadystatechange",xhrDesc||{});return result}}console.log(foo());';
const expected = ['PASS'];
run(code, expected);
});
test('issue_2437_2', () => {
const code =
'function XMLHttpRequest(){this.onreadystatechange="PASS"}global.SYMBOL_FAKE_ONREADYSTATECHANGE_1=Symbol();global.xhrDesc=null;function foo(){return bar()}function bar(){if(!xhrDesc){var req=new XMLHttpRequest;var detectFunc=function(){};req.onreadystatechange=detectFunc;var result=req[SYMBOL_FAKE_ONREADYSTATECHANGE_1]===detectFunc;req.onreadystatechange=null;return result}}console.log(foo());';
const expected = ['false'];
run(code, expected);
});
test('issue_2453', () => {
const code = 'function log(n){console.log(n)}const a=42;log(a);';
const expected = ['42'];
run(code, expected);
});
test('issue_2436_10', () => {
const code =
'var o={a:1,b:2};function f(n){o={b:3};return n}console.log(function(c){return[c.a,f(c.b),c.b]}(o).join(" "));';
const expected = ['1 2 2'];
run(code, expected);
});
test('issue_2436_13', () => {
const code =
'var a="PASS";(function(){function f(b){(function g(b){var b=b&&(b.null="FAIL")})(a)}f()})();console.log(a);';
const expected = ['PASS'];
run(code, expected);
});
test('issue_2506', () => {
const code =
'var c=0;function f0(bar){function f1(Infinity_2){function f13(NaN){if(false<=NaN&this>>1>=0){c++}}var b_2=f13(NaN,c++)}var bar=f1(-3,-1)}f0(false);console.log(c);';
const expected = ['1'];
run(code, expected);
});
test('issue_2571_1', () => {
const code = 'var b=1;try{var a=function f0(c){throw c}(2);var d=--b+a}catch(e){}console.log(b);';
const expected = ['1'];
run(code, expected);
});
test('issue_2571_2', () => {
const code = 'try{var a=A,b=1;throw a}catch(e){console.log(b)}';
const expected = ['undefined'];
run(code, expected);
});
test('may_throw_2', () => {
const code = 'function f(b){try{var a=x();++b;return b(a)}catch(e){}console.log(b)}f(0);';
const expected = ['0'];
run(code, expected);
});
test('replace_all_var', () => {
const code = 'var a="PASS";(function(){var b=b||c&&c[a="FAIL"],c=a})();console.log(a);';
const expected = ['PASS'];
run(code, expected);
});
test('cascade_forin', () => {
const code = 'var a;function f(b){return[b,b,b]}for(var c in a=console,f(a))console.log(c);';
const expected = ['0', '1', '2'];
run(code, expected);
});
test('unsafe_builtin', () => {
const code = 'function f(a){var b=Math.abs(a);return Math.pow(b,2)}console.log(f(-1),f(2));';
const expected = ['1 4'];
run(code, expected);
});
test('return_1', () => {
const code = 'var log=console.log;function f(b,c){var a=c;if(b)return b;log(a)}f(false,1);f(true,2);';
const expected = ['1'];
run(code, expected);
});
test('return_2', () => {
const code =
'var log=console.log;function f(b,c){var a=c();if(b)return b;log(a)}f(false,(function(){return 1}));f(true,(function(){return 2}));';
const expected = ['1'];
run(code, expected);
});
test('return_3', () => {
const code = 'var log=console.log;function f(b,c){var a=b<<=c;if(b)return b;log(a)}f(false,1);f(true,2);';
const expected = ['0'];
run(code, expected);
});
test('return_4', () => {
const code = 'var a="FAIL";(function(b){a="PASS";return;b(a)})();console.log(a);';
const expected = ['PASS'];
run(code, expected);
});
test.skip('issue_2858', () => {
const code = 'var b;(function(){function f(){a++}f();var c=f();var a=void 0;c||(b=a)})();console.log(b);';
const expected = ['undefined'];
run(code, expected);
});
test('cond_branch_1', () => {
const code =
'function f1(b,c){var log=console.log;var a=++c;if(b)b++;log(a,b)}function f2(b,c){var log=console.log;var a=++c;b&&b++;log(a,b)}function f3(b,c){var log=console.log;var a=++c;b?b++:b--;log(a,b)}f1(1,2);f2(3,4);f3(5,6);';
const expected = ['3 2', '5 4', '7 6'];
run(code, expected);
});
test('cond_branch_2', () => {
const code =
'function f1(b,c){var log=console.log;var a=++c;if(b)b+=a;log(a,b)}function f2(b,c){var log=console.log;var a=++c;b&&(b+=a);log(a,b)}function f3(b,c){var log=console.log;var a=++c;b?b+=a:b--;log(a,b)}f1(1,2);f2(3,4);f3(5,6);';
const expected = ['3 4', '5 8', '7 12'];
run(code, expected);
});
test('cond_branch_switch', () => {
const code = 'var c=0;if(c=1+c,0)switch(c=1+c){}console.log(c);';
const expected = ['1'];
run(code, expected);
});
test('issue_2873_1', () => {
const code = 'var b=1,c=0;do{c++;if(!--b)break;c=1+c}while(0);console.log(b,c);';
const expected = ['0 1'];
run(code, expected);
});
test('issue_2873_2', () => {
const code = 'var b=1,c=0;do{c++;if(!--b)continue;c=1+c}while(0);console.log(b,c);';
const expected = ['0 1'];
run(code, expected);
});
test('issue_2878', () => {
const code = 'var c=0;(function(a,b){function f2(){if(a)c++}b=f2();a=1;b&&b.b;f2()})();console.log(c);';
const expected = ['1'];
run(code, expected);
});
test('issue_2891_1', () => {
const code = 'var a="PASS",b;try{b=c.p=0;a="FAIL";b()}catch(e){}console.log(a);';
const expected = ['PASS'];
run(code, expected);
});
test('issue_2908', () => {
const code = 'var a=0,b=0;function f(c){if(1==c)return;a++;if(2==c)b=a}f(0);f(2);console.log(b);';
const expected = ['2'];
run(code, expected);
});
test('issue_3096', () => {
const code = 'console.log(function(){var ar=["a","b"];var first=ar.pop();return ar+""+first}());';
const expected = ['ab'];
run(code, expected);
});
test('issue_2914_1', () => {
const code =
'function read(input){var i=0;var e=0;var t=0;while(e<32){var n=input[i++];t|=(127&n)<<e;if(0===(128&n))return t;e+=7}}console.log(read([129]));';
const expected = ['1'];
run(code, expected);
});
test('issue_2914_2', () => {
const code =
'function read(input){var i=0;var e=0;var t=0;while(e<32){var n=input[i++];t=(127&n)<<e;if(0===(128&n))return t;e+=7}}console.log(read([129]));';
const expected = ['0'];
run(code, expected);
});
test('issue_2931', () => {
const code = 'console.log(function(){var a=function(){return}();return a}());';
const expected = ['undefined'];
run(code, expected);
});
test('issue_2954_1', () => {
const code = 'var a="PASS",b;try{do{b=function(){throw 0}();a="FAIL";b&&b.c}while(0)}catch(e){}console.log(a);';
const expected = ['PASS'];
run(code, expected);
});
test('collapse_rhs_conditional_1', () => {
const code = 'var a="PASS",b="FAIL";b=a;"function"==typeof f&&f(a);console.log(a,b);';
const expected = ['PASS PASS'];
run(code, expected);
});
test('collapse_rhs_conditional_2', () => {
const code = 'var a="FAIL",b;while((a="PASS",--b)&&"PASS"==b);console.log(a,b);';
const expected = ['PASS NaN'];
run(code, expected);
});
test('collapse_rhs_lhs_1', () => {
const code = 'var c=0;new function(){this[c++]=1;c+=1};console.log(c);';
const expected = ['2'];
run(code, expected);
});
test('collapse_rhs_lhs_2', () => {
const code = 'var b=1;(function f(f){f=b;f[b]=0})();console.log("PASS");';
const expected = ['PASS'];
run(code, expected);
});
test('collapse_rhs_loop', () => {
const code =
'var s;s="<tpl>PASS</tpl>";for(var m,r=/<tpl>(.*)<\\/tpl>/;m=s.match(r);)s=s.replace(m[0],m[1]);console.log(s);';
const expected = ['PASS'];
run(code, expected);
});
test('collapse_rhs_side_effects', () => {
const code = 'var a=1,c=0;new function f(){this[a--&&f()]=1;c+=1};console.log(c);';
const expected = ['2'];
run(code, expected);
});
test('collapse_rhs_vardef', () => {
const code = 'var a,b=1;a=--b+function c(){var b;c[--b]=1}();b|=a;console.log(a,b);';
const expected = ['NaN 0'];
run(code, expected);
});
test('collapse_rhs_array', () => {
const code = 'var a,b;function f(){a=[];b=[];return[]}var c=f();console.log(a===b,b===c,c===a);';
const expected = ['false false false'];
run(code, expected);
});
test('collapse_rhs_boolean_1', () => {
const code = 'var a,b;function f(){a=!0;b=!0;return!0}var c=f();console.log(a===b,b===c,c===a);';
const expected = ['true true true'];
run(code, expected);
});
test('collapse_rhs_boolean_2', () => {
const code =
'var a;(function f1(){a=function(){};if(/foo/)console.log(typeof a)})();console.log(function f2(){a=[];return!1}());';
const expected = ['function', 'false'];
run(code, expected);
});
test('collapse_rhs_function', () => {
const code =
'var a,b;function f(){a=function(){};b=function(){};return function(){}}var c=f();console.log(a===b,b===c,c===a);';
const expected = ['false false false'];
run(code, expected);
});
test('collapse_rhs_number', () => {
const code = 'var a,b;function f(){a=42;b=42;return 42}var c=f();console.log(a===b,b===c,c===a);';
const expected = ['true true true'];
run(code, expected);
});
test('collapse_rhs_object', () => {
const code = 'var a,b;function f(){a={};b={};return{}}var c=f();console.log(a===b,b===c,c===a);';
const expected = ['false false false'];
run(code, expected);
});
test('collapse_rhs_regexp', () => {
const code = 'var a,b;function f(){a=/bar/;b=/bar/;return/bar/}var c=f();console.log(a===b,b===c,c===a);';
const expected = ['false false false'];
run(code, expected);
});
test('collapse_rhs_string', () => {
const code = 'var a,b;function f(){a="foo";b="foo";return"foo"}var c=f();console.log(a===b,b===c,c===a);';
const expected = ['true true true'];
run(code, expected);
});
test('collapse_rhs_var', () => {
const code = 'var a,b;function f(){a=f;b=f;return f}var c=f();console.log(a===b,b===c,c===a);';
const expected = ['true true true'];
run(code, expected);
});
test('collapse_rhs_this', () => {
const code = 'var a,b;function f(){a=this;b=this;return this}var c=f();console.log(a===b,b===c,c===a);';
const expected = ['true true true'];
run(code, expected);
});
test('collapse_rhs_undefined', () => {
const code = 'var a,b;function f(){a=void 0;b=void 0;return void 0}var c=f();console.log(a===b,b===c,c===a);';
const expected = ['true true true'];
run(code, expected);
});
test('issue_2974', () => {
const code =
'var c=0;(function f(b){var a=2;do{b&&b[b];b&&(b.null=-4);c++}while(b.null&&--a>0)})(true);console.log(c);';
const expected = ['1'];
run(code, expected);
});
test('issue_3032', () => {
const code = 'console.log({f:function(){this.a=42;return[this.a,!1]}}.f()[0]);';
const expected = ['42'];
run(code, expected);
});
test('issue_805', () => {
const code =
'function f(){function Foo(){}Foo.prototype={};Foo.prototype.bar=42;return Foo}console.log((new(f())).bar);';
const expected = ['42'];
run(code, expected);
});
test('replace_all_var_scope', () => {
const code = 'var a=100,b=10;(function(r,a){switch(~a){case b+=a:case a++:}})(--b,a);console.log(a,b);';
const expected = ['100 109'];
run(code, expected);
});
test('issue_348', () => {
const code =
'console.log(function x(EEE){return function(tee){if(tee){const EEE=tee;if(EEE)return EEE}}(EEE)}("PASS"));';
const expected = ['PASS'];
run(code, expected);
});
test('ignore_class', () => {
const code =
'global.leak=x=>class dummy{get pass(){return x}};global.module={};(function(){const SuperClass=leak("PASS");class TheClass extends SuperClass{}module.exports=TheClass})();console.log((new module.exports).pass);';
const expected = ['PASS'];
run(code, expected);
});
test('comment_moved_between_return_and_value', () => {
const code =
'console.log(function(same_name){function licensed(same_name){return same_name.toUpperCase()}console.log("PASS");return licensed("PA")+"SS"}());';
const expected = ['PASS', 'PASS'];
run(code, expected);
});
test('self_comparison_2', () => {
const code = 'function f(){}var o={};console.log(f!=f,o===o);';
const expected = ['false true'];
run(code, expected);
});
test('issue_2857_6', () => {
const code =
'function f(a){if({}.b===undefined||{}.b===null)return a.b!==undefined&&a.b!==null}console.log(f({a:[null],get b(){return this.a.shift()}}));';
const expected = ['true'];
run(code, expected);
});