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26 lines
696 B
26 lines
696 B
var toSrc = require('./toSrc'); |
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var stripCmt = require('./stripCmt'); |
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var startWith = require('./startWith'); |
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var isStr = require('./isStr'); |
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exports = function(fn) { |
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var fnStr = stripCmt(isStr(fn) ? fn : toSrc(fn)); |
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var open; |
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var close; |
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if ( |
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!startWith(fnStr, 'async') && |
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!startWith(fnStr, 'function') && |
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!startWith(fnStr, '(') |
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) { |
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open = 0; |
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close = fnStr.indexOf('=>'); |
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} else { |
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open = fnStr.indexOf('(') + 1; |
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close = fnStr.indexOf(')'); |
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} |
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var ret = fnStr.slice(open, close); |
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ret = ret.match(regArgNames); |
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return ret === null ? [] : ret; |
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}; |
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var regArgNames = /[^\s,]+/g; |
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module.exports = exports;
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