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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _postcssValueParser = _interopRequireWildcard(require("postcss-value-parser"));
var _cssnanoUtils = require("cssnano-utils");
var _isColorStop = _interopRequireDefault(require("is-color-stop"));
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 angles = {
top: '0deg',
right: '90deg',
bottom: '180deg',
left: '270deg'
};
function isLessThan(a, b) {
return a.unit.toLowerCase() === b.unit.toLowerCase() && parseFloat(a.number) >= parseFloat(b.number);
}
function optimise(decl) {
const value = decl.value;
if (!value) {
return;
}
const normalizedValue = value.toLowerCase();
if (normalizedValue.includes('var(') || normalizedValue.includes('env(')) {
return;
}
if (!normalizedValue.includes('gradient')) {
return;
}
decl.value = (0, _postcssValueParser.default)(value).walk(node => {
if (node.type !== 'function' || !node.nodes.length) {
return false;
}
const lowerCasedValue = node.value.toLowerCase();
if (lowerCasedValue === 'linear-gradient' || lowerCasedValue === 'repeating-linear-gradient' || lowerCasedValue === '-webkit-linear-gradient' || lowerCasedValue === '-webkit-repeating-linear-gradient') {
let args = (0, _cssnanoUtils.getArguments)(node);
if (node.nodes[0].value.toLowerCase() === 'to' && args[0].length === 3) {
node.nodes = node.nodes.slice(2);
node.nodes[0].value = angles[node.nodes[0].value.toLowerCase()];
}
let lastStop = null;
args.forEach((arg, index) => {
if (!arg[2]) {
return;
}
let isFinalStop = index === args.length - 1;
let thisStop = (0, _postcssValueParser.unit)(arg[2].value);
if (lastStop === null) {
lastStop = thisStop;
if (!isFinalStop && lastStop && lastStop.number === '0' && lastStop.unit.toLowerCase() !== 'deg') {
arg[1].value = arg[2].value = '';
}
return;
}
if (lastStop && thisStop && isLessThan(lastStop, thisStop)) {
arg[2].value = 0;
}
lastStop = thisStop;
if (isFinalStop && arg[2].value === '100%') {
arg[1].value = arg[2].value = '';
}
});
return false;
}
if (lowerCasedValue === 'radial-gradient' || lowerCasedValue === 'repeating-radial-gradient') {
let args = (0, _cssnanoUtils.getArguments)(node);
let lastStop;
const hasAt = args[0].find(n => n.value.toLowerCase() === 'at');
args.forEach((arg, index) => {
if (!arg[2] || !index && hasAt) {
return;
}
let thisStop = (0, _postcssValueParser.unit)(arg[2].value);
if (!lastStop) {
lastStop = thisStop;
return;
}
if (lastStop && thisStop && isLessThan(lastStop, thisStop)) {
arg[2].value = 0;
}
lastStop = thisStop;
});
return false;
}
if (lowerCasedValue === '-webkit-radial-gradient' || lowerCasedValue === '-webkit-repeating-radial-gradient') {
let args = (0, _cssnanoUtils.getArguments)(node);
let lastStop;
args.forEach(arg => {
let color;
let stop;
if (arg[2] !== undefined) {
if (arg[0].type === 'function') {
color = `${arg[0].value}(${(0, _postcssValueParser.stringify)(arg[0].nodes)})`;
} else {
color = arg[0].value;
}
if (arg[2].type === 'function') {
stop = `${arg[2].value}(${(0, _postcssValueParser.stringify)(arg[2].nodes)})`;
} else {
stop = arg[2].value;
}
} else {
if (arg[0].type === 'function') {
color = `${arg[0].value}(${(0, _postcssValueParser.stringify)(arg[0].nodes)})`;
}
color = arg[0].value;
}
color = color.toLowerCase();
const colorStop = stop || stop === 0 ? (0, _isColorStop.default)(color, stop.toLowerCase()) : (0, _isColorStop.default)(color);
if (!colorStop || !arg[2]) {
return;
}
let thisStop = (0, _postcssValueParser.unit)(arg[2].value);
if (!lastStop) {
lastStop = thisStop;
return;
}
if (lastStop && thisStop && isLessThan(lastStop, thisStop)) {
arg[2].value = 0;
}
lastStop = thisStop;
});
return false;
}
}).toString();
}
function pluginCreator() {
return {
postcssPlugin: 'postcss-minify-gradients',
OnceExit(css) {
css.walkDecls(optimise);
}
};
}
pluginCreator.postcss = true;
var _default = pluginCreator;
exports.default = _default;
module.exports = exports.default;