ubdate

node_modules/internal-slot/index.js

@@ -0,0 +1,59 @@
+'use strict';
+
+var GetIntrinsic = require('get-intrinsic');
+var has = require('has');
+var channel = require('side-channel')();
+
+var $TypeError = GetIntrinsic('%TypeError%');
+
+var SLOT = {
+	assert: function (O, slot) {
+		if (!O || (typeof O !== 'object' && typeof O !== 'function')) {
+			throw new $TypeError('`O` is not an object');
+		}
+		if (typeof slot !== 'string') {
+			throw new $TypeError('`slot` must be a string');
+		}
+		channel.assert(O);
+	},
+	get: function (O, slot) {
+		if (!O || (typeof O !== 'object' && typeof O !== 'function')) {
+			throw new $TypeError('`O` is not an object');
+		}
+		if (typeof slot !== 'string') {
+			throw new $TypeError('`slot` must be a string');
+		}
+		var slots = channel.get(O);
+		return slots && slots['$' + slot];
+	},
+	has: function (O, slot) {
+		if (!O || (typeof O !== 'object' && typeof O !== 'function')) {
+			throw new $TypeError('`O` is not an object');
+		}
+		if (typeof slot !== 'string') {
+			throw new $TypeError('`slot` must be a string');
+		}
+		var slots = channel.get(O);
+		return !!slots && has(slots, '$' + slot);
+	},
+	set: function (O, slot, V) {
+		if (!O || (typeof O !== 'object' && typeof O !== 'function')) {
+			throw new $TypeError('`O` is not an object');
+		}
+		if (typeof slot !== 'string') {
+			throw new $TypeError('`slot` must be a string');
+		}
+		var slots = channel.get(O);
+		if (!slots) {
+			slots = {};
+			channel.set(O, slots);
+		}
+		slots['$' + slot] = V;
+	}
+};
+
+if (Object.freeze) {
+	Object.freeze(SLOT);
+}
+
+module.exports = SLOT;