diff options
Diffstat (limited to 'node_modules/core-js/modules/_to-primitive.js')
| -rw-r--r-- | node_modules/core-js/modules/_to-primitive.js | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/node_modules/core-js/modules/_to-primitive.js b/node_modules/core-js/modules/_to-primitive.js new file mode 100644 index 00000000..de3dd6b1 --- /dev/null +++ b/node_modules/core-js/modules/_to-primitive.js @@ -0,0 +1,12 @@ +// 7.1.1 ToPrimitive(input [, PreferredType]) +var isObject = require('./_is-object'); +// instead of the ES6 spec version, we didn't implement @@toPrimitive case +// and the second argument - flag - preferred type is a string +module.exports = function (it, S) { + if (!isObject(it)) return it; + var fn, val; + if (S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it))) return val; + if (typeof (fn = it.valueOf) == 'function' && !isObject(val = fn.call(it))) return val; + if (!S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it))) return val; + throw TypeError("Can't convert object to primitive value"); +}; |