vue hello world项目
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3 years ago
var toPrimitive = require('../internals/to-primitive');
var isSymbol = require('../internals/is-symbol');
// `ToPropertyKey` abstract operation
// https://tc39.es/ecma262/#sec-topropertykey
module.exports = function (argument) {
var key = toPrimitive(argument, 'string');
return isSymbol(key) ? key : key + '';
};