blob: 56e5e007ec94c5794f386016eaa73561e199eba0 [file] [log] [blame]
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _postcssValueParser = _interopRequireWildcard(require("postcss-value-parser"));
var _convert = _interopRequireDefault(require("./lib/convert"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function (nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
const LENGTH_UNITS = ['em', 'ex', 'ch', 'rem', 'vw', 'vh', 'vmin', 'vmax', 'cm', 'mm', 'q', 'in', 'pt', 'pc', 'px']; // These properties only accept percentages, so no point in trying to transform
const notALength = new Set(['descent-override', 'ascent-override', 'font-stretch', 'size-adjust', 'line-gap-override']); // Can't change the unit on these properties when they're 0
const keepWhenZero = new Set(['stroke-dashoffset', 'stroke-width', 'line-height']);
/*
* Numbers without digits after the dot are technically invalid,
* but in that case css-value-parser returns the dot as part of the unit,
* so we use this to remove the dot.
*/
function stripLeadingDot(item) {
if (item.charCodeAt(0) === '.'.charCodeAt(0)) {
return item.slice(1);
} else {
return item;
}
}
function parseWord(node, opts, keepZeroUnit) {
const pair = (0, _postcssValueParser.unit)(node.value);
if (pair) {
const num = Number(pair.number);
const u = stripLeadingDot(pair.unit);
if (num === 0) {
node.value = 0 + (keepZeroUnit || !~LENGTH_UNITS.indexOf(u.toLowerCase()) && u !== '%' ? u : '');
} else {
node.value = (0, _convert.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 = pair.unit === '%' ? num + pair.unit : 1 + pair.unit;
} else if (num < 0) {
node.value = 0 + pair.unit;
}
}
function shouldKeepZeroUnit(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' || keepWhenZero.has(lowerCasedProp);
}
function transform(opts, decl) {
const lowerCasedProp = decl.prop.toLowerCase();
if (~lowerCasedProp.indexOf('flex') || lowerCasedProp.indexOf('--') === 0 || notALength.has(lowerCasedProp)) {
return;
}
decl.value = (0, _postcssValueParser.default)(decl.value).walk(node => {
const lowerCasedValue = node.value.toLowerCase();
if (node.type === 'word') {
parseWord(node, opts, shouldKeepZeroUnit(decl));
if (lowerCasedProp === 'opacity' || lowerCasedProp === 'shape-image-threshold') {
clampOpacity(node);
}
} else if (node.type === 'function') {
if (lowerCasedValue === 'calc' || lowerCasedValue === 'min' || lowerCasedValue === 'max' || lowerCasedValue === 'clamp' || 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';
function pluginCreator(opts = {
precision: false
}) {
return {
postcssPlugin: plugin,
OnceExit(css) {
css.walkDecls(transform.bind(null, opts));
}
};
}
pluginCreator.postcss = true;
var _default = pluginCreator;
exports.default = _default;
module.exports = exports.default;