From 06ecf4dec70bc35dcdc32993a23ed6360a82a8b2 Mon Sep 17 00:00:00 2001 From: Timothy Gu Date: Thu, 19 Jan 2017 17:15:45 -0800 Subject: [PATCH] url: define @@toStringTag as a data property Even though this is not fully Web IDL spec-compliant, it is arguably the best we can do. Following the spec would mean non-trivial performance deterioration (10% when parsing a medium-length URL), while the current getter behavior is not adopted by any implementer, and it causes some spec ambiguity when the getter is called with !(this instanceof URL). This commit adopts Chrome's behavior, and is consistent with ECMAScript-defined classes while providing reasonable behaviors for corner cases as well. Until the Web IDL spec is changed one way or another, this is the way to go. PR-URL: https://github.com/nodejs/node/pull/10906 Reviewed-By: James M Snell Reviewed-By: Joyee Cheung --- lib/internal/url.js | 8 ++++---- test/parallel/test-whatwg-url-properties.js | 4 ++-- test/parallel/test-whatwg-url-tostringtag.js | 7 +++++-- 3 files changed, 11 insertions(+), 8 deletions(-) diff --git a/lib/internal/url.js b/lib/internal/url.js index 9ab469c9ff..84e04ee9d8 100644 --- a/lib/internal/url.js +++ b/lib/internal/url.js @@ -223,10 +223,6 @@ class URL { parse(this, input, base); } - get [Symbol.toStringTag]() { - return this instanceof URL ? 'URL' : 'URLPrototype'; - } - get [special]() { return (this[context].flags & binding.URL_FLAGS_SPECIAL) !== 0; } @@ -314,6 +310,10 @@ Object.defineProperties(URL.prototype, { return ret; } }, + [Symbol.toStringTag]: { + configurable: true, + value: 'URL' + }, href: { enumerable: true, configurable: true, diff --git a/test/parallel/test-whatwg-url-properties.js b/test/parallel/test-whatwg-url-properties.js index 0b5e633677..b762659fb6 100644 --- a/test/parallel/test-whatwg-url-properties.js +++ b/test/parallel/test-whatwg-url-properties.js @@ -45,7 +45,7 @@ assert.strictEqual(url.searchParams, oldParams); // [SameObject] // Note: this error message is subject to change in V8 updates assert.throws(() => url.origin = 'http://foo.bar.com:22', new RegExp('TypeError: Cannot set property origin of' + - ' \\[object Object\\] which has only a getter')); + ' \\[object URL\\] which has only a getter')); assert.strictEqual(url.origin, 'http://foo.bar.com:21'); assert.strictEqual(url.toString(), 'http://user:pass@foo.bar.com:21/aaa/zzz?l=25#test'); @@ -121,7 +121,7 @@ assert.strictEqual(url.hash, '#abcd'); // Note: this error message is subject to change in V8 updates assert.throws(() => url.searchParams = '?k=88', new RegExp('TypeError: Cannot set property searchParams of' + - ' \\[object Object\\] which has only a getter')); + ' \\[object URL\\] which has only a getter')); assert.strictEqual(url.searchParams, oldParams); assert.strictEqual(url.toString(), 'https://user2:pass2@foo.bar.org:23/aaa/bbb?k=99#abcd'); diff --git a/test/parallel/test-whatwg-url-tostringtag.js b/test/parallel/test-whatwg-url-tostringtag.js index 9e0927955f..55b0a48ce7 100644 --- a/test/parallel/test-whatwg-url-tostringtag.js +++ b/test/parallel/test-whatwg-url-tostringtag.js @@ -10,9 +10,12 @@ const sp = url.searchParams; const test = [ [toString.call(url), 'URL'], - [toString.call(Object.getPrototypeOf(url)), 'URLPrototype'], [toString.call(sp), 'URLSearchParams'], - [toString.call(Object.getPrototypeOf(sp)), 'URLSearchParamsPrototype'] + [toString.call(Object.getPrototypeOf(sp)), 'URLSearchParamsPrototype'], + // Web IDL spec says we have to return 'URLPrototype', but it is too + // expensive to implement; therefore, use Chrome's behavior for now, until + // spec is changed. + [toString.call(Object.getPrototypeOf(url)), 'URL'] ]; test.forEach((row) => {