You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
95 lines
3.3 KiB
95 lines
3.3 KiB
4 years ago
|
'use strict';
|
||
|
|
|
||
|
|
Object.defineProperty(exports, "__esModule", {
|
||
|
|
value: true
|
||
|
|
});
|
||
|
|
|
||
|
|
var _postcss = require('postcss');
|
||
|
|
|
||
|
|
var _postcss2 = _interopRequireDefault(_postcss);
|
||
|
|
|
||
|
|
var _postcssValueParser = require('postcss-value-parser');
|
||
|
|
|
||
|
|
var _postcssValueParser2 = _interopRequireDefault(_postcssValueParser);
|
||
|
|
|
||
|
|
var _convert = require('./lib/convert');
|
||
|
|
|
||
|
|
var _convert2 = _interopRequireDefault(_convert);
|
||
|
|
|
||
|
|
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
|
||
|
|
|
||
|
|
const LENGTH_UNITS = ['em', 'ex', 'ch', 'rem', 'vw', 'vh', 'vmin', 'vmax', 'cm', 'mm', 'q', 'in', 'pt', 'pc', 'px'];
|
||
|
|
|
||
|
|
function parseWord(node, opts, keepZeroUnit) {
|
||
|
|
const pair = (0, _postcssValueParser.unit)(node.value);
|
||
|
|
if (pair) {
|
||
|
|
const num = Number(pair.number);
|
||
|
|
const u = pair.unit;
|
||
|
|
if (num === 0) {
|
||
|
|
node.value = keepZeroUnit || !~LENGTH_UNITS.indexOf(u.toLowerCase()) && u !== '%' ? 0 + u : 0;
|
||
|
|
} else {
|
||
|
|
node.value = (0, _convert2.default)(num, u, opts);
|
||
|
|
|
||
|
|
if (typeof opts.precision === 'number' && u.toLowerCase() === 'px' && ~pair.number.indexOf('.')) {
|
||
|
|
const precision = Math.pow(10, opts.precision);
|
||
|
|
node.value = Math.round(parseFloat(node.value) * precision) / precision + u;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function clampOpacity(node) {
|
||
|
|
const pair = (0, _postcssValueParser.unit)(node.value);
|
||
|
|
if (!pair) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
let num = Number(pair.number);
|
||
|
|
if (num > 1) {
|
||
|
|
node.value = 1 + pair.unit;
|
||
|
|
} else if (num < 0) {
|
||
|
|
node.value = 0 + pair.unit;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function shouldStripPercent(decl) {
|
||
|
|
const { parent } = decl;
|
||
|
|
const lowerCasedProp = decl.prop.toLowerCase();
|
||
|
|
return ~decl.value.indexOf('%') && (lowerCasedProp === 'max-height' || lowerCasedProp === 'height') || parent.parent && parent.parent.name && parent.parent.name.toLowerCase() === 'keyframes' && lowerCasedProp === 'stroke-dasharray' || lowerCasedProp === 'stroke-dashoffset' || lowerCasedProp === 'stroke-width';
|
||
|
|
}
|
||
|
|
|
||
|
|
function transform(opts, decl) {
|
||
|
|
const lowerCasedProp = decl.prop.toLowerCase();
|
||
|
|
if (~lowerCasedProp.indexOf('flex') || lowerCasedProp.indexOf('--') === 0) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
decl.value = (0, _postcssValueParser2.default)(decl.value).walk(node => {
|
||
|
|
const lowerCasedValue = node.value.toLowerCase();
|
||
|
|
|
||
|
|
if (node.type === 'word') {
|
||
|
|
parseWord(node, opts, shouldStripPercent(decl));
|
||
|
|
if (lowerCasedProp === 'opacity' || lowerCasedProp === 'shape-image-threshold') {
|
||
|
|
clampOpacity(node);
|
||
|
|
}
|
||
|
|
} else if (node.type === 'function') {
|
||
|
|
if (lowerCasedValue === 'calc' || lowerCasedValue === 'hsl' || lowerCasedValue === 'hsla') {
|
||
|
|
(0, _postcssValueParser.walk)(node.nodes, n => {
|
||
|
|
if (n.type === 'word') {
|
||
|
|
parseWord(n, opts, true);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if (lowerCasedValue === 'url') {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}).toString();
|
||
|
|
}
|
||
|
|
|
||
|
|
const plugin = 'postcss-convert-values';
|
||
|
|
|
||
|
|
exports.default = _postcss2.default.plugin(plugin, (opts = { precision: false }) => {
|
||
|
|
return css => css.walkDecls(transform.bind(null, opts));
|
||
|
|
});
|
||
|
|
module.exports = exports['default'];
|