source: imaps-frontend/node_modules/internal-slot/index.js@ 0c6b92a

'use strict';

var hasOwn = require('hasown');
var channel = require('side-channel')();

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

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);
                if (!SLOT.has(O, slot)) {
                        throw new $TypeError('`' + slot + '` is not present on `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 $TypeError('`slot` must be a string');
                }
                var slots = channel.get(O);
                return !!slots && hasOwn(slots, '$' + 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;