0.2.0 - Mid migration

web/node_modules/postcss-image-set-function/CHANGELOG.md

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+# Changes to PostCSS image-set() Function
+
+### 3.0.1 (September 18, 2018)
+
+- Updated: PostCSS Values Parser 2
+
+### 3.0.0 (September 17, 2018)
+
+- Updated: Support for PostCSS 7+
+- Updated: Support for Node 6+
+
+### 2.0.0 (May 7, 2018)
+
+- Sort images by DPR and use the lowest as the default
+
+### 1.0.0 (May 2, 2018)
+
+- Initial version

web/node_modules/postcss-image-set-function/LICENSE.md

@@ -0,0 +1,108 @@
+# CC0 1.0 Universal
+
+## Statement of Purpose
+
+The laws of most jurisdictions throughout the world automatically confer
+exclusive Copyright and Related Rights (defined below) upon the creator and
+subsequent owner(s) (each and all, an “owner”) of an original work of
+authorship and/or a database (each, a “Work”).
+
+Certain owners wish to permanently relinquish those rights to a Work for the
+purpose of contributing to a commons of creative, cultural and scientific works
+(“Commons”) that the public can reliably and without fear of later claims of
+infringement build upon, modify, incorporate in other works, reuse and
+redistribute as freely as possible in any form whatsoever and for any purposes,
+including without limitation commercial purposes. These owners may contribute
+to the Commons to promote the ideal of a free culture and the further
+production of creative, cultural and scientific works, or to gain reputation or
+greater distribution for their Work in part through the use and efforts of
+others.
+
+For these and/or other purposes and motivations, and without any expectation of
+additional consideration or compensation, the person associating CC0 with a
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+
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+   7. other similar, equivalent or corresponding rights throughout the world
+      based on applicable law or treaty, and any national implementations
+      thereof.
+
+2. Waiver. To the greatest extent permitted by, but not in contravention of,
+   applicable law, Affirmer hereby overtly, fully, permanently, irrevocably and
+   unconditionally waives, abandons, and surrenders all of Affirmer’s Copyright
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+
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+   shall be deemed effective as of the date CC0 was applied by Affirmer to the
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+   invalid or ineffective under applicable law, such partial invalidity or
+   ineffectiveness shall not invalidate the remainder of the License, and in
+   such case Affirmer hereby affirms that he or she will not (i) exercise any
+   of his or her remaining Copyright and Related Rights in the Work or (ii)
+   assert any associated claims and causes of action with respect to the Work,
+   in either case contrary to Affirmer’s express Statement of Purpose.
+
+4. Limitations and Disclaimers.
+   1. No trademark or patent rights held by Affirmer are waived, abandoned,
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+http://creativecommons.org/publicdomain/zero/1.0/.

web/node_modules/postcss-image-set-function/README.md

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+# PostCSS image-set() Function [<img src="https://postcss.github.io/postcss/logo.svg" alt="PostCSS Logo" width="90" height="90" align="right">][postcss]
+
+[![NPM Version][npm-img]][npm-url]
+[![CSS Standard Status][css-img]][css-url]
+[![Build Status][cli-img]][cli-url]
+[![Support Chat][git-img]][git-url]
+
+[PostCSS image-set() Function] lets you display resolution-dependent images
+using the `image-set()` function in CSS, following the [CSS Images]
+specification.
+
+```pcss
+.example {
+  background-image: image-set(
+    url(img.png) 1x,
+    url(img@2x.png) 2x,
+    url(img@print.png) 600dpi
+  );
+}
+
+/* becomes */
+
+.example {
+  background-image: url(img.png);
+}
+
+@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
+  .example {
+    background-image: url(img@2x.png);
+  }
+}
+
+
+@media (-webkit-min-device-pixel-ratio: 6.25), (min-resolution: 600dpi) {
+  .example {
+    background-image: url(my@print.png);
+  }
+}
+
+.example {
+  background-image: image-set(
+    url(img.png) 1x,
+    url(img@2x.png) 2x,
+    url(img@print.png) 600dpi
+  );
+}
+```
+
+## Usage
+
+Add [PostCSS image-set() Function] to your project:
+
+```bash
+npm install postcss-image-set-function --save-dev
+```
+
+Use [PostCSS image-set() Function] to process your CSS:
+
+```js
+const postcssImageSetFunction = require('postcss-image-set-function');
+
+postcssImageSetFunction.process(YOUR_CSS /*, processOptions, pluginOptions */);
+```
+
+Or use it as a [PostCSS] plugin:
+
+```js
+const postcss = require('postcss');
+const postcssImageSetFunction = require('postcss-image-set-function');
+
+postcss([
+  postcssImageSetFunction(/* pluginOptions */)
+]).process(YOUR_CSS /*, processOptions */);
+```
+
+[PostCSS image-set() Function] runs in all Node environments, with special
+instructions for:
+
+| [Node](INSTALL.md#node) | [PostCSS CLI](INSTALL.md#postcss-cli) | [Webpack](INSTALL.md#webpack) | [Create React App](INSTALL.md#create-react-app) | [Gulp](INSTALL.md#gulp) | [Grunt](INSTALL.md#grunt) |
+| --- | --- | --- | --- | --- | --- |
+
+## Options
+
+### preserve
+
+The `preserve` option determines whether the original declaration using
+`image-set()` is preserved. By default, it is preserved.
+
+```js
+postcssImageSetFunction({ preserve: false })
+```
+
+```pcss
+.example {
+  background-image: image-set(
+    url(img.png) 1x,
+    url(img@2x.png) 2x,
+    url(img@print.png) 600dpi
+  );
+}
+
+/* becomes */
+
+.example {
+  background-image: url(img.png);
+}
+
+@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
+  .example {
+    background-image: url(img@2x.png);
+  }
+}
+
+
+@media (-webkit-min-device-pixel-ratio: 6.25), (min-resolution: 600dpi) {
+  .example {
+    background-image: url(my@print.png);
+  }
+}
+```
+
+### onvalid
+
+The `oninvalid` option determines how invalid usage of `image-set()` should be
+handled. By default, invalid usages of `image-set()` are ignored. They can be
+configured to display a `warning` or `throw` an error.
+
+```js
+postcssImageSetFunction({ oninvalid: 'warning' }) // warn on invalid usages
+```
+
+```js
+postcssImageSetFunction({ oninvalid: 'throw' }) // throw on invalid usages
+```
+
+## Image Resolution
+
+The `image-set()` function allows an author to provide multiple resolutions of
+an image and let the browser decide which is most appropriate in a given
+situation. The `image-set()` also never fails to choose an image; the
+`<resolution>` just helps determine which of the images is chosen.
+
+Since this plugin is not a browser, the image options are sorted by device
+pixel ratio and the lowest ratio is used as the default, while the remaining
+images are pushed behind media queries.
+
+Therefore, this plugin can only approximate native browser behavior. While
+images should typically match the resolution as the device they’re being viewed
+in, other factors can affect the chosen image. For example, if the user is on a
+slow mobile connection, the browser may prefer to select a lower-res image
+rather than wait for a larger, resolution-matching image to load.
+
+[cli-img]: https://img.shields.io/travis/jonathantneal/postcss-image-set-function.svg
+[cli-url]: https://travis-ci.org/jonathantneal/postcss-image-set-function
+[css-img]: https://cssdb.org/badge/image-set-function.svg
+[css-url]: https://cssdb.org/#image-set-function
+[git-img]: https://img.shields.io/badge/support-chat-blue.svg
+[git-url]: https://gitter.im/postcss/postcss
+[npm-img]: https://img.shields.io/npm/v/postcss-image-set-function.svg
+[npm-url]: https://www.npmjs.com/package/postcss-image-set-function
+
+[CSS Images]: https://drafts.csswg.org/css-images-4/#image-set-notation
+[Gulp PostCSS]: https://github.com/postcss/gulp-postcss
+[Grunt PostCSS]: https://github.com/nDmitry/grunt-postcss
+[PostCSS]: https://github.com/postcss/postcss
+[PostCSS Loader]: https://github.com/postcss/postcss-loader
+[PostCSS image-set() Function]: https://github.com/jonathantneal/postcss-image-set-function

web/node_modules/postcss-image-set-function/index.cjs.js

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+'use strict';
+
+function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }
+
+var postcss = _interopDefault(require('postcss'));
+var valueParser = _interopDefault(require('postcss-values-parser'));
+
+// return whether a node is a valid comma
+var getComma = (node => Object(node).type === 'comma');
+
+const imageSetFunctionMatchRegExp = /^(-webkit-)?image-set$/i; // return a valid image
+
+var getImage = (node => // <url> | <image()> | <cross-fade()> | <gradient>
+// the image-set() function can not be nested inside of itself
+Object(node).type === 'func' && /^(cross-fade|image|(repeating-)?(conic|linear|radial)-gradient|url)$/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);
+
+const dpiRatios = {
+  dpcm: 2.54,
+  dpi: 1,
+  dppx: 96,
+  x: 96
+}; // return a valid @media rule
+
+var getMedia = ((node, mediasByDpr) => {
+  if (Object(node).type === 'number' && node.unit in dpiRatios) {
+    // calculate min-device-pixel-ratio and min-resolution
+    const dpi = Number(node.value) * dpiRatios[node.unit.toLowerCase()];
+    const dpr = Math.floor(dpi / dpiRatios.x * 100) / 100;
+
+    if (dpi in mediasByDpr) {
+      return false;
+    } else {
+      const media = mediasByDpr[dpi] = postcss.atRule({
+        name: 'media',
+        params: `(-webkit-min-device-pixel-ratio: ${dpr}), (min-resolution: ${dpi}dpi)`
+      });
+      return media;
+    }
+  } else {
+    return false;
+  }
+});
+
+var handleInvalidation = ((opts, message, word) => {
+  if (opts.oninvalid === 'warn') {
+    opts.decl.warn(opts.result, message, {
+      word: String(word)
+    });
+  } else if (opts.oninvalid === 'throw') {
+    throw opts.decl.error(message, {
+      word: String(word)
+    });
+  }
+});
+
+var processImageSet = ((imageSetOptionNodes, decl, opts) => {
+  const parent = decl.parent;
+  const mediasByDpr = {};
+  let length = imageSetOptionNodes.length;
+  let index = -1;
+
+  while (index < length) {
+    const _ref = [index < 0 ? true : getComma(imageSetOptionNodes[index]), getImage(imageSetOptionNodes[index + 1]), getMedia(imageSetOptionNodes[index + 2], mediasByDpr)],
+          comma = _ref[0],
+          value = _ref[1],
+          media = _ref[2]; // handle invalidations
+
+    if (!comma) {
+      return handleInvalidation(opts, 'unexpected comma', imageSetOptionNodes[index]);
+    } else if (!value) {
+      return handleInvalidation(opts, 'unexpected image', imageSetOptionNodes[index + 1]);
+    } else if (!media) {
+      return handleInvalidation(opts, 'unexpected resolution', imageSetOptionNodes[index + 2]);
+    } // prepare @media { decl: <image> }
+
+
+    const parentClone = parent.clone().removeAll();
+    const declClone = decl.clone({
+      value
+    });
+    parentClone.append(declClone);
+    media.append(parentClone);
+    index += 3;
+  }
+
+  const medias = Object.keys(mediasByDpr).sort((a, b) => a - b).map(params => mediasByDpr[params]); // conditionally prepend previous siblings
+
+  if (medias.length) {
+    const firstDecl = medias[0].nodes[0].nodes[0];
+
+    if (medias.length === 1) {
+      decl.value = firstDecl.value;
+    } else {
+      const siblings = parent.nodes;
+      const previousSiblings = siblings.slice(0, siblings.indexOf(decl)).concat(firstDecl);
+
+      if (previousSiblings.length) {
+        const parentClone = parent.cloneBefore().removeAll();
+        parentClone.append(previousSiblings);
+      } // prepend any @media { decl: <image> } rules
+
+
+      parent.before(medias.slice(1)); // conditionally remove the current rule
+
+      if (!opts.preserve) {
+        decl.remove(); // and then conditionally remove its parent
+
+        if (!parent.nodes.length) {
+          parent.remove();
+        }
+      }
+    }
+  }
+});
+
+const imageSetValueMatchRegExp = /(^|[^\w-])(-webkit-)?image-set\(/;
+const imageSetFunctionMatchRegExp$1 = /^(-webkit-)?image-set$/i;
+var index = postcss.plugin('postcss-image-set-function', opts => {
+  // prepare options
+  const preserve = 'preserve' in Object(opts) ? Boolean(opts.preserve) : true;
+  const oninvalid = 'oninvalid' in Object(opts) ? opts.oninvalid : 'ignore';
+  return (root, result) => {
+    // for every declaration
+    root.walkDecls(decl => {
+      const value = decl.value; // if a declaration likely uses an image-set() function
+
+      if (imageSetValueMatchRegExp.test(value)) {
+        const valueAST = valueParser(value).parse(); // process every image-set() function
+
+        valueAST.walkType('func', node => {
+          if (imageSetFunctionMatchRegExp$1.test(node.value)) {
+            processImageSet(node.nodes.slice(1, -1), decl, {
+              decl,
+              oninvalid,
+              preserve,
+              result
+            });
+          }
+        });
+      }
+    });
+  };
+});
+
+module.exports = index;
+//# sourceMappingURL=index.cjs.js.map

web/node_modules/postcss-image-set-function/index.es.mjs

@@ -0,0 +1,142 @@
+import postcss from 'postcss';
+import valueParser from 'postcss-values-parser';
+
+// return whether a node is a valid comma
+var getComma = (node => Object(node).type === 'comma');
+
+const imageSetFunctionMatchRegExp = /^(-webkit-)?image-set$/i; // return a valid image
+
+var getImage = (node => // <url> | <image()> | <cross-fade()> | <gradient>
+// the image-set() function can not be nested inside of itself
+Object(node).type === 'func' && /^(cross-fade|image|(repeating-)?(conic|linear|radial)-gradient|url)$/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);
+
+const dpiRatios = {
+  dpcm: 2.54,
+  dpi: 1,
+  dppx: 96,
+  x: 96
+}; // return a valid @media rule
+
+var getMedia = ((node, mediasByDpr) => {
+  if (Object(node).type === 'number' && node.unit in dpiRatios) {
+    // calculate min-device-pixel-ratio and min-resolution
+    const dpi = Number(node.value) * dpiRatios[node.unit.toLowerCase()];
+    const dpr = Math.floor(dpi / dpiRatios.x * 100) / 100;
+
+    if (dpi in mediasByDpr) {
+      return false;
+    } else {
+      const media = mediasByDpr[dpi] = postcss.atRule({
+        name: 'media',
+        params: `(-webkit-min-device-pixel-ratio: ${dpr}), (min-resolution: ${dpi}dpi)`
+      });
+      return media;
+    }
+  } else {
+    return false;
+  }
+});
+
+var handleInvalidation = ((opts, message, word) => {
+  if (opts.oninvalid === 'warn') {
+    opts.decl.warn(opts.result, message, {
+      word: String(word)
+    });
+  } else if (opts.oninvalid === 'throw') {
+    throw opts.decl.error(message, {
+      word: String(word)
+    });
+  }
+});
+
+var processImageSet = ((imageSetOptionNodes, decl, opts) => {
+  const parent = decl.parent;
+  const mediasByDpr = {};
+  let length = imageSetOptionNodes.length;
+  let index = -1;
+
+  while (index < length) {
+    const _ref = [index < 0 ? true : getComma(imageSetOptionNodes[index]), getImage(imageSetOptionNodes[index + 1]), getMedia(imageSetOptionNodes[index + 2], mediasByDpr)],
+          comma = _ref[0],
+          value = _ref[1],
+          media = _ref[2]; // handle invalidations
+
+    if (!comma) {
+      return handleInvalidation(opts, 'unexpected comma', imageSetOptionNodes[index]);
+    } else if (!value) {
+      return handleInvalidation(opts, 'unexpected image', imageSetOptionNodes[index + 1]);
+    } else if (!media) {
+      return handleInvalidation(opts, 'unexpected resolution', imageSetOptionNodes[index + 2]);
+    } // prepare @media { decl: <image> }
+
+
+    const parentClone = parent.clone().removeAll();
+    const declClone = decl.clone({
+      value
+    });
+    parentClone.append(declClone);
+    media.append(parentClone);
+    index += 3;
+  }
+
+  const medias = Object.keys(mediasByDpr).sort((a, b) => a - b).map(params => mediasByDpr[params]); // conditionally prepend previous siblings
+
+  if (medias.length) {
+    const firstDecl = medias[0].nodes[0].nodes[0];
+
+    if (medias.length === 1) {
+      decl.value = firstDecl.value;
+    } else {
+      const siblings = parent.nodes;
+      const previousSiblings = siblings.slice(0, siblings.indexOf(decl)).concat(firstDecl);
+
+      if (previousSiblings.length) {
+        const parentClone = parent.cloneBefore().removeAll();
+        parentClone.append(previousSiblings);
+      } // prepend any @media { decl: <image> } rules
+
+
+      parent.before(medias.slice(1)); // conditionally remove the current rule
+
+      if (!opts.preserve) {
+        decl.remove(); // and then conditionally remove its parent
+
+        if (!parent.nodes.length) {
+          parent.remove();
+        }
+      }
+    }
+  }
+});
+
+const imageSetValueMatchRegExp = /(^|[^\w-])(-webkit-)?image-set\(/;
+const imageSetFunctionMatchRegExp$1 = /^(-webkit-)?image-set$/i;
+var index = postcss.plugin('postcss-image-set-function', opts => {
+  // prepare options
+  const preserve = 'preserve' in Object(opts) ? Boolean(opts.preserve) : true;
+  const oninvalid = 'oninvalid' in Object(opts) ? opts.oninvalid : 'ignore';
+  return (root, result) => {
+    // for every declaration
+    root.walkDecls(decl => {
+      const value = decl.value; // if a declaration likely uses an image-set() function
+
+      if (imageSetValueMatchRegExp.test(value)) {
+        const valueAST = valueParser(value).parse(); // process every image-set() function
+
+        valueAST.walkType('func', node => {
+          if (imageSetFunctionMatchRegExp$1.test(node.value)) {
+            processImageSet(node.nodes.slice(1, -1), decl, {
+              decl,
+              oninvalid,
+              preserve,
+              result
+            });
+          }
+        });
+      }
+    });
+  };
+});
+
+export default index;
+//# sourceMappingURL=index.es.mjs.map

web/node_modules/postcss-image-set-function/package.json

@@ -0,0 +1,60 @@
+{
+  "name": "postcss-image-set-function",
+  "version": "3.0.1",
+  "description": "Display resolution-dependent images using the image-set() function in CSS",
+  "author": "Jonathan Neal <jonathantneal@hotmail.com>",
+  "license": "CC0-1.0",
+  "repository": "jonathantneal/postcss-image-set-function",
+  "homepage": "https://github.com/jonathantneal/postcss-image-set-function#readme",
+  "bugs": "https://github.com/jonathantneal/postcss-image-set-function/issues",
+  "main": "index.cjs.js",
+  "module": "index.es.mjs",
+  "files": [
+    "index.cjs.js",
+    "index.cjs.js.map",
+    "index.es.mjs",
+    "index.es.mjs.map"
+  ],
+  "scripts": {
+    "prepublishOnly": "npm test",
+    "pretest": "rollup -c .rollup.js --silent",
+    "test": "echo 'Running tests...'; npm run test:js && npm run test:tape",
+    "test:ec": "echint --ignore index.*.js test",
+    "test:js": "eslint *.js --cache --ignore-path .gitignore --quiet",
+    "test:tape": "postcss-tape"
+  },
+  "engines": {
+    "node": ">=6.0.0"
+  },
+  "dependencies": {
+    "postcss": "^7.0.2",
+    "postcss-values-parser": "^2.0.0"
+  },
+  "devDependencies": {
+    "@babel/core": "^7.1.0",
+    "@babel/preset-env": "^7.1.0",
+    "babel-eslint": "^9.0.0",
+    "eslint": "^5.6.0",
+    "eslint-config-dev": "^2.0.0",
+    "postcss-tape": "^2.2.0",
+    "pre-commit": "^1.2.2",
+    "rollup": "^0.66.0",
+    "rollup-plugin-babel": "^4.0.3"
+  },
+  "eslintConfig": {
+    "extends": "dev",
+    "parser": "babel-eslint"
+  },
+  "keywords": [
+    "postcss",
+    "css",
+    "postcss-plugin",
+    "image-set",
+    "background",
+    "image",
+    "responsive",
+    "resolution",
+    "negotiation",
+    "optimization"
+  ]
+}