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28 lines
839 B
CoffeeScript
28 lines
839 B
CoffeeScript
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# Public: Measure how long a function takes to run.
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#
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# description - A {String} description that will be logged to the console when
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# the function completes.
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# fn - A {Function} to measure the duration of.
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#
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# Returns the value returned by the given function.
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window.measure = (description, fn) ->
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start = Date.now()
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value = fn()
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result = Date.now() - start
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console.log description, result
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value
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# Public: Create a dev tools profile for a function.
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#
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# description - A {String} description that will be available in the Profiles
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# tab of the dev tools.
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# fn - A {Function} to profile.
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#
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# Returns the value returned by the given function.
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window.profile = (description, fn) ->
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measure description, ->
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console.profile(description)
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value = fn()
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console.profileEnd(description)
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value
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