Mirrors/lodash
1
0
Fork 0
mirror of https://github.com/whoisclebs/lodash.git synced 2026-02-07 01:57:50 +00:00
Code Issues Packages Projects Releases Wiki Activity

Only use built-in Object.assign when in strict mode.

Browse Source
This commit is contained in:
jdalton
2015-04-22 20:23:30 -07:00
parent 641cd63462
commit fcc0608cf2
1 changed files with 13 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
lodash.src.js
View File

@@ -803,12 +803,19 @@
// //
// Use `Object.preventExtensions` on a plain object instead of simply using // Use `Object.preventExtensions` on a plain object instead of simply using
// `Object('x')` because Chrome and IE fail to throw an error when attempting // `Object('x')` because Chrome and IE fail to throw an error when attempting
// to assign values to readonly indexes of strings in strict mode. // to assign values to readonly indexes of strings.
var object = { '1': 0 }, var func = preventExtensions && isNative(func = Object.assign) && func;
func = preventExtensions && isNative(func = Object.assign) && func; try {
if (func) {
try { func(preventExtensions(object), 'xo'); } catch(e) {} var object = preventExtensions({ '1': 0 });
return !object[1] && func; object[0] = 1;
}
} catch(e) {
// Only attempt in strict mode.
try { func(object, 'xo'); } catch(e) {}
return !object[1] && func;
}
return false;
}()); }());
/* Native method references for those with the same name as other `lodash` methods. */ /* Native method references for those with the same name as other `lodash` methods. */