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Use user installation of cssnano (#1432)
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fathyb authored and devongovett committed Jul 4, 2018
1 parent 57f4c45 commit 8cee316
Showing 1 changed file with 8 additions and 4 deletions.
12 changes: 8 additions & 4 deletions src/transforms/postcss.js
@@ -1,7 +1,7 @@
const localRequire = require('../utils/localRequire');
const loadPlugins = require('../utils/loadPlugins');
const postcss = require('postcss');
const cssnano = require('cssnano');
const semver = require('semver');

module.exports = async function(asset) {
let config = await getConfig(asset);
Expand Down Expand Up @@ -49,14 +49,18 @@ async function getConfig(asset) {
}

if (asset.options.minify) {
let [cssnano, {version}] = await Promise.all(
['cssnano', 'cssnano/package.json'].map(name =>
localRequire(name, asset.name).catch(() => require(name))
)
);
config.plugins.push(
cssnano(
(await asset.getConfig(['cssnano.config.js'])) || {
// Only enable safe css transforms by default.
// Only enable safe css transforms if cssnano < 4
// See: https://github.com/parcel-bundler/parcel/issues/698
// Note: Remove when upgrading cssnano to v4
// See: https://github.com/ben-eb/cssnano/releases/tag/v4.0.0-rc.0
safe: true
safe: semver.satisfies(version, '<4.0.0-rc')
}
)
);
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