source: trip-planner-front/node_modules/postcss-image-set-function/index.cjs.js@ 76712b2

Last change on this file since 76712b2 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

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1'use strict';
2
3function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }
4
5var postcss = _interopDefault(require('postcss'));
6var valueParser = _interopDefault(require('postcss-values-parser'));
7
8// return whether a node is a valid comma
9var getComma = (node => Object(node).type === 'comma');
10
11const imageSetFunctionMatchRegExp = /^(-webkit-)?image-set$/i; // return a valid image
12
13var getImage = (node => // <url> | <image()> | <cross-fade()> | <gradient>
14// the image-set() function can not be nested inside of itself
15Object(node).type === 'func' && /^(cross-fade|image|(repeating-)?(conic|linear|radial)-gradient|url)$/i.test(node.value) && !(node.parent.parent && node.parent.parent.type === 'func' && imageSetFunctionMatchRegExp.test(node.parent.parent.value)) ? String(node) : Object(node).type === 'string' ? node.value : false);
16
17const dpiRatios = {
18 dpcm: 2.54,
19 dpi: 1,
20 dppx: 96,
21 x: 96
22}; // return a valid @media rule
23
24var getMedia = ((node, mediasByDpr) => {
25 if (Object(node).type === 'number' && node.unit in dpiRatios) {
26 // calculate min-device-pixel-ratio and min-resolution
27 const dpi = Number(node.value) * dpiRatios[node.unit.toLowerCase()];
28 const dpr = Math.floor(dpi / dpiRatios.x * 100) / 100;
29
30 if (dpi in mediasByDpr) {
31 return false;
32 } else {
33 const media = mediasByDpr[dpi] = postcss.atRule({
34 name: 'media',
35 params: `(-webkit-min-device-pixel-ratio: ${dpr}), (min-resolution: ${dpi}dpi)`
36 });
37 return media;
38 }
39 } else {
40 return false;
41 }
42});
43
44var handleInvalidation = ((opts, message, word) => {
45 if (opts.oninvalid === 'warn') {
46 opts.decl.warn(opts.result, message, {
47 word: String(word)
48 });
49 } else if (opts.oninvalid === 'throw') {
50 throw opts.decl.error(message, {
51 word: String(word)
52 });
53 }
54});
55
56var processImageSet = ((imageSetOptionNodes, decl, opts) => {
57 const parent = decl.parent;
58 const mediasByDpr = {};
59 let length = imageSetOptionNodes.length;
60 let index = -1;
61
62 while (index < length) {
63 const _ref = [index < 0 ? true : getComma(imageSetOptionNodes[index]), getImage(imageSetOptionNodes[index + 1]), getMedia(imageSetOptionNodes[index + 2], mediasByDpr)],
64 comma = _ref[0],
65 value = _ref[1],
66 media = _ref[2]; // handle invalidations
67
68 if (!comma) {
69 return handleInvalidation(opts, 'unexpected comma', imageSetOptionNodes[index]);
70 } else if (!value) {
71 return handleInvalidation(opts, 'unexpected image', imageSetOptionNodes[index + 1]);
72 } else if (!media) {
73 return handleInvalidation(opts, 'unexpected resolution', imageSetOptionNodes[index + 2]);
74 } // prepare @media { decl: <image> }
75
76
77 const parentClone = parent.clone().removeAll();
78 const declClone = decl.clone({
79 value
80 });
81 parentClone.append(declClone);
82 media.append(parentClone);
83 index += 3;
84 }
85
86 const medias = Object.keys(mediasByDpr).sort((a, b) => a - b).map(params => mediasByDpr[params]); // conditionally prepend previous siblings
87
88 if (medias.length) {
89 const firstDecl = medias[0].nodes[0].nodes[0];
90
91 if (medias.length === 1) {
92 decl.value = firstDecl.value;
93 } else {
94 const siblings = parent.nodes;
95 const previousSiblings = siblings.slice(0, siblings.indexOf(decl)).concat(firstDecl);
96
97 if (previousSiblings.length) {
98 const parentClone = parent.cloneBefore().removeAll();
99 parentClone.append(previousSiblings);
100 } // prepend any @media { decl: <image> } rules
101
102
103 parent.before(medias.slice(1)); // conditionally remove the current rule
104
105 if (!opts.preserve) {
106 decl.remove(); // and then conditionally remove its parent
107
108 if (!parent.nodes.length) {
109 parent.remove();
110 }
111 }
112 }
113 }
114});
115
116const imageSetValueMatchRegExp = /(^|[^\w-])(-webkit-)?image-set\(/;
117const imageSetFunctionMatchRegExp$1 = /^(-webkit-)?image-set$/i;
118var index = postcss.plugin('postcss-image-set-function', opts => {
119 // prepare options
120 const preserve = 'preserve' in Object(opts) ? Boolean(opts.preserve) : true;
121 const oninvalid = 'oninvalid' in Object(opts) ? opts.oninvalid : 'ignore';
122 return (root, result) => {
123 // for every declaration
124 root.walkDecls(decl => {
125 const value = decl.value; // if a declaration likely uses an image-set() function
126
127 if (imageSetValueMatchRegExp.test(value)) {
128 const valueAST = valueParser(value).parse(); // process every image-set() function
129
130 valueAST.walkType('func', node => {
131 if (imageSetFunctionMatchRegExp$1.test(node.value)) {
132 processImageSet(node.nodes.slice(1, -1), decl, {
133 decl,
134 oninvalid,
135 preserve,
136 result
137 });
138 }
139 });
140 }
141 });
142 };
143});
144
145module.exports = index;
146//# sourceMappingURL=index.cjs.js.map
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