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Use WeakMaps if available to store function metadata.

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This commit is contained in:
John-David Dalton
2014-08-14 09:37:15 -07:00
parent c139a0d9ed
commit d6850ab358
3 changed files with 55 additions and 17 deletions
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10
test/index.html
View File

@@ -54,7 +54,7 @@
var hasOwnProperty = objectProto.hasOwnProperty,
fnToString = funcProto.toString,
nativeString = fnToString.call(objectProto.toString),
noop = function() {},
noop = function() { },
propertyIsEnumerable = objectProto.propertyIsEnumerable,
reToString = /toString/g,
whitespace = ' \t\x0B\f\xA0\ufeff\n\r\u2028\u2029\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000';
@@ -154,6 +154,9 @@
return Float64Array;
}());
}
setProperty(window, '_WeakMap', window.WeakMap);
setProperty(window, 'WeakMap', noop);
setProperty(window, '_parseInt', parseInt);
setProperty(window, 'parseInt', (function(_parseInt) {
var checkStr = whitespace + '08',
@@ -235,6 +238,11 @@
}
setProperty(window, '_ArrayBuffer', undefined);
if (window._WeakMap) {
WeakMap = _WeakMap;
}
setProperty(window, '_WeakMap', undefined);
setProperty(window, 'parseInt', window._parseInt);
setProperty(window, '_parseInt', undefined);

7
test/test.js
View File

@@ -38,7 +38,8 @@
slice = arrayProto.slice,
system = root.system,
toString = objectProto.toString,
Uint8Array = root.Uint8Array;
Uint8Array = root.Uint8Array,
WeakMap = root.WeakMap;
/** The file path of the Lo-Dash file to test */
var filePath = (function() {
@@ -2179,7 +2180,7 @@
var object = {};
if (defineProperty && _.support.funcDecomp) {
if ((defineProperty && !WeakMap) && _.support.funcDecomp) {
_.callback(a, object);
ok(EXPANDO in a);
@@ -2205,7 +2206,7 @@
test('should not write metadata when `_.support.funcDecomp` is `false`', 1, function() {
function a() {};
if (defineProperty && lodashBizarro) {
if ((defineProperty && !WeakMap) && lodashBizarro) {
lodashBizarro.callback(a, {});
ok(!(EXPANDO in a));
}