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There was no .browserslistrc and no browserslist key, so the build had been resolving browserslist's defaults - 32 entries including and_qq, and_uc, op_mini and Chrome 109. The new file states the policy as version floors, so the build moves only when we move it: chrome >= 131 (November 2024) edge >= 131 (November 2024, Chromium numbering) firefox >= 128 (July 2024, the ESR - corporate pins it) safari >= 17 (September 2023, and iOS 17 with it) not dead With those targets stated, src/polyfills.ts no longer needs the fifteen core-js ES6/ES7 imports it carried from the IE era, and nothing else in src imports core-js, so the dependency goes too (package.json, package-lock.json and the angular.json commonjs allow-list). Measured on the same tree: polyfills.js 155,341 -> 93,953 bytes raw (-39.5%), gzip 47,819 -> 25,767 (-46%, about 22 KiB per visit on every route); main.js unchanged. BREAKING CHANGE: the supported browsers are now Chrome/Edge 131+, Firefox 128+ and Safari/iOS 17+. A client on Chrome 110 or Safari 16 no longer gets the shims and is not supported.
25 lines
951 B
Plaintext
25 lines
951 B
Plaintext
# Browsers Data Controller supports.
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#
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# The policy is the last one to two years of the four engines our estates
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# actually run - Edge first (most of our users), then Chrome, Firefox and
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# Safari. Nothing older, and no IE: the security updates of the last six months
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# are a fair reason to expect an evergreen browser, and Angular cannot run on
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# EdgeHTML or IE anyway.
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#
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# Version floors rather than `last 2 versions`: a floor is a statement we can
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# test against, and it does not move the build every time an engine ships.
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# Roughly two years back from late 2026:
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#
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# chrome 131 November 2024
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# edge 131 November 2024 (Chromium, same numbering)
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# firefox 128 July 2024 (the ESR, kept because corporate pins it)
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# safari 17 September 2023 (and iOS 17, which ships with it)
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#
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# Move these deliberately, with the release dates, when the window moves.
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chrome >= 131
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edge >= 131
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firefox >= 128
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safari >= 17
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ios_saf >= 17
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not dead
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