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'use strict';
require('../common');
const assert = require('assert');
const symbol = Symbol('sym');
// Verify that getting via a symbol key returns undefined.
assert.strictEqual(process.env[symbol], undefined);
// Verify that assigning via a symbol key throws.
// The message depends on the JavaScript engine and so will be different between
// different JavaScript engines. Confirm that the `Error` is a `TypeError` only.
assert.throws(() => {
process.env[symbol] = 42;
}, TypeError);
// Verify that assigning a symbol value throws.
// The message depends on the JavaScript engine and so will be different between
// different JavaScript engines. Confirm that the `Error` is a `TypeError` only.
assert.throws(() => {
process.env.foo = symbol;
}, TypeError);
// Verify that using a symbol with the in operator returns false.
assert.strictEqual(symbol in process.env, false);
// Verify that deleting a symbol key returns true.
assert.strictEqual(delete process.env[symbol], true);
// Checks that well-known symbols like `Symbol.toStringTag` won’t throw.
Object.prototype.toString.call(process.env);