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node_modules/es-abstract/2020/ToPropertyDescriptor.js

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+'use strict';
+
+var has = require('has');
+
+var GetIntrinsic = require('get-intrinsic');
+
+var $TypeError = GetIntrinsic('%TypeError%');
+
+var Type = require('./Type');
+var ToBoolean = require('./ToBoolean');
+var IsCallable = require('./IsCallable');
+
+// https://262.ecma-international.org/5.1/#sec-8.10.5
+
+module.exports = function ToPropertyDescriptor(Obj) {
+	if (Type(Obj) !== 'Object') {
+		throw new $TypeError('ToPropertyDescriptor requires an object');
+	}
+
+	var desc = {};
+	if (has(Obj, 'enumerable')) {
+		desc['[[Enumerable]]'] = ToBoolean(Obj.enumerable);
+	}
+	if (has(Obj, 'configurable')) {
+		desc['[[Configurable]]'] = ToBoolean(Obj.configurable);
+	}
+	if (has(Obj, 'value')) {
+		desc['[[Value]]'] = Obj.value;
+	}
+	if (has(Obj, 'writable')) {
+		desc['[[Writable]]'] = ToBoolean(Obj.writable);
+	}
+	if (has(Obj, 'get')) {
+		var getter = Obj.get;
+		if (typeof getter !== 'undefined' && !IsCallable(getter)) {
+			throw new $TypeError('getter must be a function');
+		}
+		desc['[[Get]]'] = getter;
+	}
+	if (has(Obj, 'set')) {
+		var setter = Obj.set;
+		if (typeof setter !== 'undefined' && !IsCallable(setter)) {
+			throw new $TypeError('setter must be a function');
+		}
+		desc['[[Set]]'] = setter;
+	}
+
+	if ((has(desc, '[[Get]]') || has(desc, '[[Set]]')) && (has(desc, '[[Value]]') || has(desc, '[[Writable]]'))) {
+		throw new $TypeError('Invalid property descriptor. Cannot both specify accessors and a value or writable attribute');
+	}
+	return desc;
+};