43 lines
2.0 KiB
JavaScript
43 lines
2.0 KiB
JavaScript
module.exports = {
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use: [
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'postcss-flexbugs-fixes',
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'autoprefixer'
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],
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map: {
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inline: false,
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annotation: true,
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sourcesContent: true
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},
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autoprefixer: {
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browsers: [
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//
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// Official browser support policy:
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// https://v4-alpha.getbootstrap.com/getting-started/browsers-devices/#supported-browsers
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//
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'Chrome >= 35', // Exact version number here is kinda arbitrary
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// Rather than using Autoprefixer's native "Firefox ESR" version specifier string,
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// we deliberately hardcode the number. This is to avoid unwittingly severely breaking the previous ESR in the event that:
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// (a) we happen to ship a new Bootstrap release soon after the release of a new ESR,
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// such that folks haven't yet had a reasonable amount of time to upgrade; and
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// (b) the new ESR has unprefixed CSS properties/values whose absence would severely break webpages
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// (e.g. `box-sizing`, as opposed to `background: linear-gradient(...)`).
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// Since they've been unprefixed, Autoprefixer will stop prefixing them,
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// thus causing them to not work in the previous ESR (where the prefixes were required).
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'Firefox >= 38', // Current Firefox Extended Support Release (ESR); https://www.mozilla.org/en-US/firefox/organizations/faq/
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// Note: Edge versions in Autoprefixer & Can I Use refer to the EdgeHTML rendering engine version,
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// NOT the Edge app version shown in Edge's "About" screen.
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// For example, at the time of writing, Edge 20 on an up-to-date system uses EdgeHTML 12.
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// See also https://github.com/Fyrd/caniuse/issues/1928
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'Edge >= 12',
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'Explorer >= 9',
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// Out of leniency, we prefix these 1 version further back than the official policy.
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'iOS >= 8',
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'Safari >= 8',
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// The following remain NOT officially supported, but we're lenient and include their prefixes to avoid severely breaking in them.
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'Android 2.3',
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'Android >= 4',
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'Opera >= 12'
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]
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}
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}
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