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es-abstract

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ECMAScript spec abstract operations.

19 lines (14 loc) 482 B
'use strict'; var $TypeError = require('es-errors/type'); var isObject = require('../helpers/isObject'); var isPropertyKey = require('../helpers/isPropertyKey'); // https://262.ecma-international.org/6.0/#sec-hasproperty module.exports = function HasProperty(O, P) { if (!isObject(O)) { throw new $TypeError('Assertion failed: `O` must be an Object'); } if (!isPropertyKey(P)) { throw new $TypeError('Assertion failed: `P` must be a Property Key'); } return P in O; };