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Add toSource helper.

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John-David Dalton
2016-04-01 17:22:11 -07:00
parent 64652c263f
commit ebf9904e8a
1 changed files with 25 additions and 12 deletions
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37
lodash.js
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@@ -1449,11 +1449,11 @@
var realNames = {}; var realNames = {};
/** Used to detect maps, sets, and weakmaps. */ /** Used to detect maps, sets, and weakmaps. */
var dataViewCtorString = DataView ? (DataView + '') : '', var dataViewCtorString = toSource(DataView),
mapCtorString = Map ? funcToString.call(Map) : '', mapCtorString = toSource(Map),
promiseCtorString = Promise ? funcToString.call(Promise) : '', promiseCtorString = toSource(Promise),
setCtorString = Set ? funcToString.call(Set) : '', setCtorString = toSource(Set),
weakMapCtorString = WeakMap ? funcToString.call(WeakMap) : ''; weakMapCtorString = toSource(WeakMap);
/** Used to convert symbols to primitives and strings. */ /** Used to convert symbols to primitives and strings. */
var symbolProto = Symbol ? Symbol.prototype : undefined, var symbolProto = Symbol ? Symbol.prototype : undefined,
@@ -5290,7 +5290,7 @@
getTag = function(value) { getTag = function(value) {
var result = objectToString.call(value), var result = objectToString.call(value),
Ctor = result == objectTag ? value.constructor : null, Ctor = result == objectTag ? value.constructor : null,
ctorString = typeof Ctor == 'function' ? funcToString.call(Ctor) : ''; ctorString = toSource(Ctor);
if (ctorString) { if (ctorString) {
switch (ctorString) { switch (ctorString) {
@@ -5739,6 +5739,22 @@
return result; return result;
}); });
/**
* Converts `func` to its source code.
*
* @private
* @param {Function} func The function to process.
* @returns {string} Returns the source code.
*/
function toSource(func) {
if (isFunction(func)) {
try {
return funcToString.call(func);
} catch (e) {}
}
return toString(func);
}
/** /**
* Creates a clone of `wrapper`. * Creates a clone of `wrapper`.
* *
@@ -10842,13 +10858,10 @@
if (value == null) { if (value == null) {
return false; return false;
} }
if (isFunction(value)) { if (isObjectLike(value)) {
try { return (isHostObject(value) ? reIsNative : reIsHostCtor).test(value);
return reIsNative.test(funcToString.call(value));
} catch (e) {}
} }
return isObjectLike(value) && return reIsNative.test(toSource(value));
(isHostObject(value) ? reIsNative : reIsHostCtor).test(value);
} }
/** /**