diff options
Diffstat (limited to 'node_modules/postcss-minify-selectors/dist')
3 files changed, 205 insertions, 0 deletions
diff --git a/node_modules/postcss-minify-selectors/dist/index.js b/node_modules/postcss-minify-selectors/dist/index.js new file mode 100644 index 00000000..5e917fdc --- /dev/null +++ b/node_modules/postcss-minify-selectors/dist/index.js @@ -0,0 +1,168 @@ +'use strict'; + +exports.__esModule = true; + +var _postcss = require('postcss'); + +var _alphanumSort = require('alphanum-sort'); + +var _alphanumSort2 = _interopRequireDefault(_alphanumSort); + +var _has = require('has'); + +var _has2 = _interopRequireDefault(_has); + +var _postcssSelectorParser = require('postcss-selector-parser'); + +var _postcssSelectorParser2 = _interopRequireDefault(_postcssSelectorParser); + +var _unquote = require('./lib/unquote'); + +var _unquote2 = _interopRequireDefault(_unquote); + +var _canUnquote = require('./lib/canUnquote'); + +var _canUnquote2 = _interopRequireDefault(_canUnquote); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +var pseudoElements = ['::before', '::after', '::first-letter', '::first-line']; + +function getParsed(selectors, callback) { + return (0, _postcssSelectorParser2.default)(callback).process(selectors).result; +} + +function attribute(selector) { + if (selector.value) { + // Join selectors that are split over new lines + selector.value = selector.value.replace(/\\\n/g, '').trim(); + if ((0, _canUnquote2.default)(selector.value)) { + selector.value = (0, _unquote2.default)(selector.value); + } + selector.operator = selector.operator.trim(); + } + if (selector.raws && selector.raws.insensitive) { + selector.raws.insensitive = ''; + } + selector.attribute = selector.attribute.trim(); +} + +function combinator(selector) { + var value = selector.value.trim(); + selector.value = value.length ? value : ' '; +} + +var pseudoReplacements = { + ':nth-child': ':first-child', + ':nth-of-type': ':first-of-type', + ':nth-last-child': ':last-child', + ':nth-last-of-type': ':last-of-type' +}; + +function pseudo(selector) { + if (selector.nodes.length === 1 && pseudoReplacements[selector.value]) { + var first = selector.at(0); + var one = first.at(0); + if (first.length === 1) { + if (one.value === '1') { + selector.replaceWith(_postcssSelectorParser2.default.pseudo({ + value: pseudoReplacements[selector.value] + })); + } + if (one.value === 'even') { + one.value = '2n'; + } + } + if (first.length === 3) { + var two = first.at(1); + var three = first.at(2); + if (one.value === '2n' && two.value === '+' && three.value === '1') { + one.value = 'odd'; + two.remove(); + three.remove(); + } + } + + return; + } + var uniques = []; + selector.walk(function (child) { + if (child.type === 'selector') { + var childStr = String(child); + if (!~uniques.indexOf(childStr)) { + uniques.push(childStr); + } else { + child.remove(); + } + } + }); + if (~pseudoElements.indexOf(selector.value)) { + selector.value = selector.value.slice(1); + } +} + +var tagReplacements = { + from: '0%', + '100%': 'to' +}; + +function tag(selector) { + var value = selector.value; + + if ((0, _has2.default)(tagReplacements, value)) { + selector.value = tagReplacements[value]; + } +} + +function universal(selector) { + var next = selector.next(); + if (next && next.type !== 'combinator') { + selector.remove(); + } +} + +var reducers = { + attribute: attribute, + combinator: combinator, + pseudo: pseudo, + tag: tag, + universal: universal +}; + +function optimise(rule) { + var selector = rule.raws.selector && rule.raws.selector.value === rule.selector ? rule.raws.selector.raw : rule.selector; + // If the selector ends with a ':' it is likely a part of a custom mixin, + // so just pass through. + if (selector[selector.length - 1] === ':') { + return; + } + rule.selector = getParsed(selector, function (selectors) { + selectors.nodes = (0, _alphanumSort2.default)(selectors.nodes, { insensitive: true }); + var uniqueSelectors = []; + selectors.walk(function (sel) { + var type = sel.type; + // Trim whitespace around the value + + sel.spaces.before = sel.spaces.after = ''; + if ((0, _has2.default)(reducers, type)) { + reducers[type](sel); + return; + } + var toString = String(sel); + if (type === 'selector' && sel.parent.type !== 'pseudo') { + if (!~uniqueSelectors.indexOf(toString)) { + uniqueSelectors.push(toString); + } else { + sel.remove(); + } + } + }); + }); +} + +exports.default = (0, _postcss.plugin)('postcss-minify-selectors', function () { + return function (css) { + return css.walkRules(optimise); + }; +}); +module.exports = exports['default'];
\ No newline at end of file diff --git a/node_modules/postcss-minify-selectors/dist/lib/canUnquote.js b/node_modules/postcss-minify-selectors/dist/lib/canUnquote.js new file mode 100644 index 00000000..d540c2c5 --- /dev/null +++ b/node_modules/postcss-minify-selectors/dist/lib/canUnquote.js @@ -0,0 +1,28 @@ +'use strict'; + +exports.__esModule = true; +exports.default = canUnquote; + +var _unquote = require('./unquote'); + +var _unquote2 = _interopRequireDefault(_unquote); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +/** + * Can unquote attribute detection from mothereff.in + * Copyright Mathias Bynens <https://mathiasbynens.be/> + * https://github.com/mathiasbynens/mothereff.in + */ +var escapes = /\\([0-9A-Fa-f]{1,6})[ \t\n\f\r]?/g; +var range = /[\u0000-\u002c\u002e\u002f\u003A-\u0040\u005B-\u005E\u0060\u007B-\u009f]/; + +function canUnquote(value) { + value = (0, _unquote2.default)(value); + if (value === '-' || value === '') { + return false; + } + value = value.replace(escapes, 'a').replace(/\\./g, 'a'); + return !(range.test(value) || /^(?:-?\d|--)/.test(value)); +} +module.exports = exports['default'];
\ No newline at end of file diff --git a/node_modules/postcss-minify-selectors/dist/lib/unquote.js b/node_modules/postcss-minify-selectors/dist/lib/unquote.js new file mode 100644 index 00000000..12c21eb6 --- /dev/null +++ b/node_modules/postcss-minify-selectors/dist/lib/unquote.js @@ -0,0 +1,9 @@ +'use strict'; + +exports.__esModule = true; + +exports.default = function (string) { + return string.replace(/["']/g, ''); +}; + +module.exports = exports['default'];
\ No newline at end of file |