ECMAScript discouraged/legacy feature #2564
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| name: JavaScript built-ins (legacy) | ||
| description: | ||
| spec: https://tc39.es/ecma262/multipage/ | ||
| group: javascript | ||
| discouraged: | ||
| according_to: | ||
| - https://tc39.es/ecma262/#sec-additional-ecmascript-features-for-web-browsers | ||
| - https://tc39.es/ecma262/#sec-object.prototype-legacy-accessor-methods | ||
| - https://tc39.es/ecma262/#sec-object.prototype.__proto__ | ||
| compat_features: | ||
| # The following properties are legacy according to: | ||
| # https://tc39.es/ecma262/#sec-additional-ecmascript-features-for-web-browsers | ||
| - javascript.builtins.escape | ||
| - javascript.builtins.unescape | ||
| - javascript.builtins.String.anchor | ||
| - javascript.builtins.String.big | ||
| - javascript.builtins.String.blink | ||
| - javascript.builtins.String.bold | ||
| - javascript.builtins.String.fixed | ||
| - javascript.builtins.String.fontcolor | ||
| - javascript.builtins.String.fontsize | ||
| - javascript.builtins.String.italics | ||
| - javascript.builtins.String.link | ||
| - javascript.builtins.String.small | ||
| - javascript.builtins.String.strike | ||
| - javascript.builtins.String.sub | ||
| - javascript.builtins.String.substr | ||
| - javascript.builtins.String.sup | ||
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There was a problem hiding this comment. These also look like they might work better as standalone HTML wrapper methods feature, an alternative being the |
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| - javascript.builtins.Date.getYear | ||
| - javascript.builtins.Date.setYear | ||
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There was a problem hiding this comment. I guess these two could make sense together as well. |
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| - javascript.builtins.Date.toGMTString | ||
| - javascript.builtins.RegExp.compile | ||
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| # The following properties are legacy according to: | ||
| # https://tc39.es/ecma262/#sec-object.prototype-legacy-accessor-methods | ||
| - javascript.builtins.Object.defineGetter | ||
| - javascript.builtins.Object.defineSetter | ||
| - javascript.builtins.Object.lookupGetter | ||
| - javascript.builtins.Object.lookupSetter | ||
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There was a problem hiding this comment. This one could be a "__defineGetter__() and __defineSetter__()" feature. For now it could have |
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| # The following properties are legacy according to: | ||
| # https://tc39.es/ecma262/#sec-object.prototype.__proto__ | ||
| - javascript.builtins.Object.proto | ||
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There was a problem hiding this comment. Now that I've gotten to the end, I'm left with just a few miscellaneous, single-key items:
This isn't too bad? I'd be willing to tolerate having features for these, if it makes the consistency and shape of the other features mentioned above more legible. |
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| # Generated from: javascript-discouraged.yml | ||
| # Do not edit this file by hand. Edit the source file instead! | ||
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| status: | ||
| baseline: false | ||
| support: | ||
| chrome: "1" | ||
| chrome_android: "18" | ||
| edge: "12" | ||
| firefox: "1" | ||
| firefox_android: "4" | ||
| safari: "3.1" | ||
| safari_ios: "2" | ||
| compat_features: | ||
| # baseline: false | ||
| # support: | ||
| # chrome: "1" | ||
| # chrome_android: "18" | ||
| # edge: "12" | ||
| # firefox: "1" | ||
| # firefox_android: "4" | ||
| # safari: "1" | ||
| # safari_ios: "1" | ||
| - javascript.builtins.Date.getYear | ||
| - javascript.builtins.Date.setYear | ||
| - javascript.builtins.Date.toGMTString | ||
| - javascript.builtins.String.anchor | ||
| - javascript.builtins.String.big | ||
| - javascript.builtins.String.blink | ||
| - javascript.builtins.String.bold | ||
| - javascript.builtins.String.fixed | ||
| - javascript.builtins.String.fontcolor | ||
| - javascript.builtins.String.fontsize | ||
| - javascript.builtins.String.italics | ||
| - javascript.builtins.String.link | ||
| - javascript.builtins.String.small | ||
| - javascript.builtins.String.strike | ||
| - javascript.builtins.String.sub | ||
| - javascript.builtins.String.substr | ||
| - javascript.builtins.String.sup | ||
| - javascript.builtins.escape | ||
| - javascript.builtins.unescape | ||
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| # baseline: false | ||
| # support: | ||
| # chrome: "1" | ||
| # chrome_android: "18" | ||
| # edge: "12" | ||
| # firefox: "1" | ||
| # firefox_android: "4" | ||
| # safari: "3" | ||
| # safari_ios: "1" | ||
| - javascript.builtins.Object.defineGetter | ||
| - javascript.builtins.Object.defineSetter | ||
| - javascript.builtins.Object.lookupGetter | ||
| - javascript.builtins.Object.lookupSetter | ||
| - javascript.builtins.Object.proto | ||
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| # ⬇️ Same status as overall feature ⬇️ | ||
| # baseline: false | ||
| # support: | ||
| # chrome: "1" | ||
| # chrome_android: "18" | ||
| # edge: "12" | ||
| # firefox: "1" | ||
| # firefox_android: "4" | ||
| # safari: "3.1" | ||
| # safari_ios: "2" | ||
| - javascript.builtins.RegExp.compile |
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I think breaking this out into a separate feature (something like "escape() and unescape()") would help us do better discouragement information. We don't have all the data for this yet (it'd be nice to reference an "internal" feature on
javascriptforencodeURIComponent()and friends) but I'm thinking ahead here about how a consumer like MDN might be able to use this data for useful developer content (as on the current MDN page).