| "use strict"; |
| |
| Object.defineProperty(exports, "__esModule", { |
| value: true |
| }); |
| exports.default = void 0; |
| |
| var _postcssValueParser = _interopRequireWildcard(require("postcss-value-parser")); |
| |
| 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 directionKeywords = ['top', 'right', 'bottom', 'left', 'center']; |
| const center = '50%'; |
| const horizontal = { |
| right: '100%', |
| left: '0' |
| }; |
| const verticalValue = { |
| bottom: '100%', |
| top: '0' |
| }; |
| |
| function isCommaNode(node) { |
| return node.type === 'div' && node.value === ','; |
| } |
| |
| function isVariableFunctionNode(node) { |
| if (node.type !== 'function') { |
| return false; |
| } |
| |
| return ['var', 'env'].includes(node.value.toLowerCase()); |
| } |
| |
| function isMathFunctionNode(node) { |
| if (node.type !== 'function') { |
| return false; |
| } |
| |
| return ['calc', 'min', 'max', 'clamp'].includes(node.value.toLowerCase()); |
| } |
| |
| function isNumberNode(node) { |
| if (node.type !== 'word') { |
| return false; |
| } |
| |
| const value = parseFloat(node.value); |
| return !isNaN(value); |
| } |
| |
| function isDimensionNode(node) { |
| if (node.type !== 'word') { |
| return false; |
| } |
| |
| const parsed = (0, _postcssValueParser.unit)(node.value); |
| |
| if (!parsed) { |
| return false; |
| } |
| |
| return parsed.unit !== ''; |
| } |
| |
| function transform(value) { |
| const parsed = (0, _postcssValueParser.default)(value); |
| const ranges = []; |
| let rangeIndex = 0; |
| let shouldContinue = true; |
| parsed.nodes.forEach((node, index) => { |
| // After comma (`,`) follows next background |
| if (isCommaNode(node)) { |
| rangeIndex += 1; |
| shouldContinue = true; |
| return; |
| } |
| |
| if (!shouldContinue) { |
| return; |
| } // After separator (`/`) follows `background-size` values |
| // Avoid them |
| |
| |
| if (node.type === 'div' && node.value === '/') { |
| shouldContinue = false; |
| return; |
| } |
| |
| if (!ranges[rangeIndex]) { |
| ranges[rangeIndex] = { |
| start: null, |
| end: null |
| }; |
| } // Do not try to be processed `var and `env` function inside background |
| |
| |
| if (isVariableFunctionNode(node)) { |
| shouldContinue = false; |
| ranges[rangeIndex].start = null; |
| ranges[rangeIndex].end = null; |
| return; |
| } |
| |
| const isPositionKeyword = node.type === 'word' && directionKeywords.includes(node.value.toLowerCase()) || isDimensionNode(node) || isNumberNode(node) || isMathFunctionNode(node); |
| |
| if (ranges[rangeIndex].start === null && isPositionKeyword) { |
| ranges[rangeIndex].start = index; |
| ranges[rangeIndex].end = index; |
| return; |
| } |
| |
| if (ranges[rangeIndex].start !== null) { |
| if (node.type === 'space') { |
| return; |
| } else if (isPositionKeyword) { |
| ranges[rangeIndex].end = index; |
| return; |
| } |
| |
| return; |
| } |
| }); |
| ranges.forEach(range => { |
| if (range.start === null) { |
| return; |
| } |
| |
| const nodes = parsed.nodes.slice(range.start, range.end + 1); |
| |
| if (nodes.length > 3) { |
| return; |
| } |
| |
| const firstNode = nodes[0].value.toLowerCase(); |
| const secondNode = nodes[2] && nodes[2].value ? nodes[2].value.toLowerCase() : null; |
| |
| if (nodes.length === 1 || secondNode === 'center') { |
| if (secondNode) { |
| nodes[2].value = nodes[1].value = ''; |
| } |
| |
| const map = Object.assign({}, horizontal, { |
| center |
| }); |
| |
| if (Object.prototype.hasOwnProperty.call(map, firstNode)) { |
| nodes[0].value = map[firstNode]; |
| } |
| |
| return; |
| } |
| |
| if (firstNode === 'center' && directionKeywords.includes(secondNode)) { |
| nodes[0].value = nodes[1].value = ''; |
| |
| if (Object.prototype.hasOwnProperty.call(horizontal, secondNode)) { |
| nodes[2].value = horizontal[secondNode]; |
| } |
| |
| return; |
| } |
| |
| if (Object.prototype.hasOwnProperty.call(horizontal, firstNode) && Object.prototype.hasOwnProperty.call(verticalValue, secondNode)) { |
| nodes[0].value = horizontal[firstNode]; |
| nodes[2].value = verticalValue[secondNode]; |
| return; |
| } else if (Object.prototype.hasOwnProperty.call(verticalValue, firstNode) && Object.prototype.hasOwnProperty.call(horizontal, secondNode)) { |
| nodes[0].value = horizontal[secondNode]; |
| nodes[2].value = verticalValue[firstNode]; |
| return; |
| } |
| }); |
| return parsed.toString(); |
| } |
| |
| function pluginCreator() { |
| return { |
| postcssPlugin: 'postcss-normalize-positions', |
| |
| OnceExit(css) { |
| const cache = new Map(); |
| css.walkDecls(/^(background(-position)?|(-\w+-)?perspective-origin)$/i, decl => { |
| const value = decl.value; |
| |
| if (!value) { |
| return; |
| } |
| |
| if (cache.has(value)) { |
| decl.value = cache.get(value); |
| return; |
| } |
| |
| const result = transform(value); |
| decl.value = result; |
| cache.set(value, result); |
| }); |
| } |
| |
| }; |
| } |
| |
| pluginCreator.postcss = true; |
| var _default = pluginCreator; |
| exports.default = _default; |
| module.exports = exports.default; |