Commitce972e2

Johannes

committed

added detectStrictMode-module

1 parent7d90695 commitce972e2Copy full SHA for ce972e2

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+25

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Lines changed: 5 additions & 0 deletions

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	`1`	`+functiondetectStrictMode(src){`
	`2`	`+return(/^\s*"usestrict";/g).test(src);`
	`3`	`+}`
	`4`	`+`
	`5`	`+module.exports=detectStrictMode;`

Lines changed: 13 additions & 0 deletions

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	`1`	`+varexpect=require("expect.js"),`
	`2`	`+detectStrictMode=require("../lib/detectStrictMode.js");`
	`3`	`+`
	`4`	`+describe("detectStrictMode",function(){`
	`5`	`+it("should detect \"use strict\"; at the beginning of a string and ignore all whitespace before",function(){`
	`6`	`+expect(detectStrictMode('"use strict";')).to.be(true);`
	`7`	`+expect(detectStrictMode(' "use strict";')).to.be(true);`
	`8`	`+expect(detectStrictMode(' \n "use strict";')).to.be(true);`
	`9`	`+});`
	`10`	`+it("should not detect \"use strict\"; if it occurs in some nested function",function(){`
	`11`	`+expect(detectStrictMode('function () {"use strict";}')).to.be(false);`
	`12`	`+});`
	`13`	`+});`

Lines changed: 7 additions & 0 deletions

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	`1`	`+"use strict";// run code in ES5 strict mode`
	`2`	`+`
	`3`	`+functiondoSomethingUnstrict(){`
	`4`	`+varcaller=arguments.callee.caller;// this should throw an error as a proof that strict mode is on`
	`5`	`+}`
	`6`	`+`
	`7`	`+exports.doSomethingUnstrict=doSomethingUnstrict;`

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