build

node_modules/es-abstract/2016/SetFunctionName.js

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+'use strict';
+
+var GetIntrinsic = require('../GetIntrinsic');
+
+var has = require('has');
+
+var $TypeError = GetIntrinsic('%TypeError%');
+
+var getSymbolDescription = require('../helpers/getSymbolDescription');
+
+var DefinePropertyOrThrow = require('./DefinePropertyOrThrow');
+var IsExtensible = require('./IsExtensible');
+var Type = require('./Type');
+
+// https://ecma-international.org/ecma-262/6.0/#sec-setfunctionname
+
+module.exports = function SetFunctionName(F, name) {
+	if (typeof F !== 'function') {
+		throw new $TypeError('Assertion failed: `F` must be a function');
+	}
+	if (!IsExtensible(F) || has(F, 'name')) {
+		throw new $TypeError('Assertion failed: `F` must be extensible, and must not have a `name` own property');
+	}
+	var nameType = Type(name);
+	if (nameType !== 'Symbol' && nameType !== 'String') {
+		throw new $TypeError('Assertion failed: `name` must be a Symbol or a String');
+	}
+	if (nameType === 'Symbol') {
+		var description = getSymbolDescription(name);
+		// eslint-disable-next-line no-param-reassign
+		name = typeof description === 'undefined' ? '' : '[' + description + ']';
+	}
+	if (arguments.length > 2) {
+		var prefix = arguments[2];
+		// eslint-disable-next-line no-param-reassign
+		name = prefix + ' ' + name;
+	}
+	return DefinePropertyOrThrow(F, 'name', {
+		'[[Value]]': name,
+		'[[Writable]]': false,
+		'[[Enumerable]]': false,
+		'[[Configurable]]': true
+	});
+};