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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 000000000..16354eed6 --- /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"); +};
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