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Filename : index.js
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'use strict';

var $defineProperty = require('es-define-property');

var $SyntaxError = require('es-errors/syntax');
var $TypeError = require('es-errors/type');

var gopd = require('gopd');

/** @type {import('.')} */
module.exports = function defineDataProperty(
	obj,
	property,
	value
) {
	if (!obj || (typeof obj !== 'object' && typeof obj !== 'function')) {
		throw new $TypeError('`obj` must be an object or a function`');
	}
	if (typeof property !== 'string' && typeof property !== 'symbol') {
		throw new $TypeError('`property` must be a string or a symbol`');
	}
	if (arguments.length > 3 && typeof arguments[3] !== 'boolean' && arguments[3] !== null) {
		throw new $TypeError('`nonEnumerable`, if provided, must be a boolean or null');
	}
	if (arguments.length > 4 && typeof arguments[4] !== 'boolean' && arguments[4] !== null) {
		throw new $TypeError('`nonWritable`, if provided, must be a boolean or null');
	}
	if (arguments.length > 5 && typeof arguments[5] !== 'boolean' && arguments[5] !== null) {
		throw new $TypeError('`nonConfigurable`, if provided, must be a boolean or null');
	}
	if (arguments.length > 6 && typeof arguments[6] !== 'boolean') {
		throw new $TypeError('`loose`, if provided, must be a boolean');
	}

	var nonEnumerable = arguments.length > 3 ? arguments[3] : null;
	var nonWritable = arguments.length > 4 ? arguments[4] : null;
	var nonConfigurable = arguments.length > 5 ? arguments[5] : null;
	var loose = arguments.length > 6 ? arguments[6] : false;

	/* @type {false | TypedPropertyDescriptor<unknown>} */
	var desc = !!gopd && gopd(obj, property);

	if ($defineProperty) {
		$defineProperty(obj, property, {
			configurable: nonConfigurable === null && desc ? desc.configurable : !nonConfigurable,
			enumerable: nonEnumerable === null && desc ? desc.enumerable : !nonEnumerable,
			value: value,
			writable: nonWritable === null && desc ? desc.writable : !nonWritable
		});
	} else if (loose || (!nonEnumerable && !nonWritable && !nonConfigurable)) {
		// must fall back to [[Set]], and was not explicitly asked to make non-enumerable, non-writable, or non-configurable
		obj[property] = value; // eslint-disable-line no-param-reassign
	} else {
		throw new $SyntaxError('This environment does not support defining a property as non-configurable, non-writable, or non-enumerable.');
	}
};