|
| 1 | +"use strict"; |
| 2 | + |
| 3 | +var _postcss = _interopRequireDefault(require("postcss")); |
| 4 | + |
| 5 | +var _postcssValueParser = _interopRequireDefault( |
| 6 | + require("postcss-value-parser") |
| 7 | +); |
| 8 | + |
| 9 | +var _icssUtils = require("icss-utils"); |
| 10 | + |
| 11 | +function _interopRequireDefault(obj) { |
| 12 | + return obj && obj.__esModule ? obj : { default: obj }; |
| 13 | +} |
| 14 | + |
| 15 | +const plugin = "postcss-plugin-import"; |
| 16 | + |
| 17 | +const getArg = nodes => |
| 18 | + nodes.length !== 0 && nodes[0].type === "string" |
| 19 | + ? nodes[0].value |
| 20 | + : _postcssValueParser.default.stringify(nodes); |
| 21 | + |
| 22 | +const getUrl = node => { |
| 23 | + if (node.type === "function" && node.value.toLowerCase() === "url") { |
| 24 | + return getArg(node.nodes); |
| 25 | + } |
| 26 | + |
| 27 | + if (node.type === "string") { |
| 28 | + return node.value; |
| 29 | + } |
| 30 | + |
| 31 | + return ""; |
| 32 | +}; |
| 33 | + |
| 34 | +const parseImport = params => { |
| 35 | + const _valueParser = (0, _postcssValueParser.default)(params), |
| 36 | + nodes = _valueParser.nodes; |
| 37 | + |
| 38 | + if (nodes.length === 0) { |
| 39 | + return null; |
| 40 | + } |
| 41 | + |
| 42 | + const url = getUrl(nodes[0]); |
| 43 | + |
| 44 | + if (url.trim().length === 0) { |
| 45 | + return null; |
| 46 | + } |
| 47 | + |
| 48 | + return { |
| 49 | + url, |
| 50 | + media: _postcssValueParser.default.stringify(nodes.slice(1)).trim() |
| 51 | + }; |
| 52 | +}; |
| 53 | + |
| 54 | +const defaultFilter = url => !/^\w+:\/\//.test(url) && !url.startsWith("//"); |
| 55 | + |
| 56 | +module.exports = _postcss.default.plugin( |
| 57 | + plugin, |
| 58 | + (options = {}) => (css, result) => { |
| 59 | + const imports = {}; |
| 60 | + const filter = options.filter || defaultFilter; |
| 61 | + css.walkAtRules(/^import$/i, atrule => { |
| 62 | + // Convert only top-level @import |
| 63 | + if (atrule.parent.type !== "root") { |
| 64 | + return; |
| 65 | + } |
| 66 | + |
| 67 | + if (atrule.nodes) { |
| 68 | + return result.warn( |
| 69 | + "It looks like you didn't end your @import statement correctly. " + |
| 70 | + "Child nodes are attached to it.", |
| 71 | + { |
| 72 | + node: atrule |
| 73 | + } |
| 74 | + ); |
| 75 | + } |
| 76 | + |
| 77 | + const parsed = parseImport(atrule.params); |
| 78 | + |
| 79 | + if (parsed === null) { |
| 80 | + return result.warn(`Unable to find uri in '${atrule.toString()}'`, { |
| 81 | + node: atrule |
| 82 | + }); |
| 83 | + } |
| 84 | + |
| 85 | + if (filter && !filter(parsed.url)) { |
| 86 | + return; |
| 87 | + } |
| 88 | + |
| 89 | + atrule.remove(); |
| 90 | + imports[ |
| 91 | + `"${parsed.url}"${ |
| 92 | + parsed.media.length > 0 ? ` ${parsed.media.toLowerCase()}` : "" |
| 93 | + }` |
| 94 | + ] = {}; |
| 95 | + }); |
| 96 | + |
| 97 | + if (Object.keys(imports).length === 0) { |
| 98 | + return; |
| 99 | + } |
| 100 | + |
| 101 | + css.prepend((0, _icssUtils.createICSSRules)(imports, {})); |
| 102 | + } |
| 103 | +); |
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