]>
git.ipfire.org Git - ipfire.org.git/blob - src/scss/bootstrap-4.0.0-alpha.6/grunt/postcss.js
3 'postcss-flexbugs-fixes',
14 // Official browser support policy:
15 // https://v4-alpha.getbootstrap.com/getting-started/browsers-devices/#supported-browsers
17 'Chrome >= 35', // Exact version number here is kinda arbitrary
18 // Rather than using Autoprefixer's native "Firefox ESR" version specifier string,
19 // we deliberately hardcode the number. This is to avoid unwittingly severely breaking the previous ESR in the event that:
20 // (a) we happen to ship a new Bootstrap release soon after the release of a new ESR,
21 // such that folks haven't yet had a reasonable amount of time to upgrade; and
22 // (b) the new ESR has unprefixed CSS properties/values whose absence would severely break webpages
23 // (e.g. `box-sizing`, as opposed to `background: linear-gradient(...)`).
24 // Since they've been unprefixed, Autoprefixer will stop prefixing them,
25 // thus causing them to not work in the previous ESR (where the prefixes were required).
26 'Firefox >= 38', // Current Firefox Extended Support Release (ESR); https://www.mozilla.org/en-US/firefox/organizations/faq/
27 // Note: Edge versions in Autoprefixer & Can I Use refer to the EdgeHTML rendering engine version,
28 // NOT the Edge app version shown in Edge's "About" screen.
29 // For example, at the time of writing, Edge 20 on an up-to-date system uses EdgeHTML 12.
30 // See also https://github.com/Fyrd/caniuse/issues/1928
33 // Out of leniency, we prefix these 1 version further back than the official policy.
36 // The following remain NOT officially supported, but we're lenient and include their prefixes to avoid severely breaking in them.