flow like the river

BACK_BACK/node_modules/postcss-normalize-repeat-style/LICENSE-MIT

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+Copyright (c) Ben Briggs <beneb.info@gmail.com> (http://beneb.info)
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.

BACK_BACK/node_modules/postcss-normalize-repeat-style/README.md

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+# [postcss][postcss]-normalize-repeat-style
+
+> Normalize repeat styles with PostCSS.
+
+## Install
+
+With [npm](https://npmjs.org/package/postcss-normalize-repeat-style) do:
+
+```
+npm install postcss-normalize-repeat-style --save
+```
+
+## Example
+
+### Input
+
+```css
+h1 {
+    background: url(image.jpg) repeat no-repeat
+}
+```
+
+### Output
+
+```css
+h1 {
+    background: url(image.jpg) repeat-x
+}
+```
+
+## Usage
+
+See the [PostCSS documentation](https://github.com/postcss/postcss#usage) for
+examples for your environment.
+
+## Contributors
+
+See [CONTRIBUTORS.md](https://github.com/cssnano/cssnano/blob/master/CONTRIBUTORS.md).
+
+## License
+
+MIT © [Ben Briggs](http://beneb.info)
+
+[postcss]: https://github.com/postcss/postcss

BACK_BACK/node_modules/postcss-normalize-repeat-style/dist/index.js

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+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+
+var _postcss = require('postcss');
+
+var _postcss2 = _interopRequireDefault(_postcss);
+
+var _postcssValueParser = require('postcss-value-parser');
+
+var _postcssValueParser2 = _interopRequireDefault(_postcssValueParser);
+
+var _cssnanoUtilGetArguments = require('cssnano-util-get-arguments');
+
+var _cssnanoUtilGetArguments2 = _interopRequireDefault(_cssnanoUtilGetArguments);
+
+var _cssnanoUtilGetMatch = require('cssnano-util-get-match');
+
+var _cssnanoUtilGetMatch2 = _interopRequireDefault(_cssnanoUtilGetMatch);
+
+var _map = require('./lib/map');
+
+var _map2 = _interopRequireDefault(_map);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+function evenValues(list, index) {
+    return index % 2 === 0;
+}
+
+const repeatKeywords = _map2.default.map(mapping => mapping[0]);
+
+const getMatch = (0, _cssnanoUtilGetMatch2.default)(_map2.default);
+
+exports.default = _postcss2.default.plugin('postcss-normalize-repeat-style', () => {
+    return css => {
+        const cache = {};
+
+        css.walkDecls(/background(-repeat)?|(-webkit-)?mask-repeat/i, decl => {
+            const value = decl.value;
+
+            if (cache[value]) {
+                decl.value = cache[value];
+
+                return;
+            }
+
+            const parsed = (0, _postcssValueParser2.default)(value);
+
+            if (parsed.nodes.length === 1) {
+                cache[value] = value;
+
+                return;
+            }
+
+            const args = (0, _cssnanoUtilGetArguments2.default)(parsed);
+            const relevant = [];
+
+            args.forEach(arg => {
+                relevant.push({
+                    start: null,
+                    end: null
+                });
+
+                arg.forEach((part, index) => {
+                    const isRepeat = ~repeatKeywords.indexOf(part.value.toLowerCase());
+                    const len = relevant.length - 1;
+
+                    if (relevant[len].start === null && isRepeat) {
+                        relevant[len].start = index;
+                        relevant[len].end = index;
+
+                        return;
+                    }
+
+                    if (relevant[len].start !== null) {
+                        if (part.type === 'space') {
+                            return;
+                        } else if (isRepeat) {
+                            relevant[len].end = index;
+
+                            return;
+                        }
+
+                        return;
+                    }
+                });
+            });
+
+            relevant.forEach((range, index) => {
+                if (range.start === null) {
+                    return;
+                }
+
+                const val = args[index].slice(range.start, range.end + 1);
+
+                if (val.length !== 3) {
+                    return;
+                }
+
+                const match = getMatch(val.filter(evenValues).map(n => n.value.toLowerCase()));
+
+                if (match) {
+                    args[index][range.start].value = match;
+                    args[index][range.start + 1].value = '';
+                    args[index][range.end].value = '';
+                }
+            });
+
+            const result = parsed.toString();
+
+            decl.value = result;
+            cache[value] = result;
+        });
+    };
+});
+module.exports = exports['default'];

BACK_BACK/node_modules/postcss-normalize-repeat-style/dist/lib/map.js

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+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+exports.default = [['repeat-x', ['repeat', 'no-repeat']], ['repeat-y', ['no-repeat', 'repeat']], ['repeat', ['repeat', 'repeat']], ['space', ['space', 'space']], ['round', ['round', 'round']], ['no-repeat', ['no-repeat', 'no-repeat']]];
+module.exports = exports['default'];

BACK_BACK/node_modules/postcss-normalize-repeat-style/package.json

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+{
+  "name": "postcss-normalize-repeat-style",
+  "version": "4.0.2",
+  "description": "Convert two value syntax for repeat-style into one value.",
+  "main": "dist/index.js",
+  "scripts": {
+    "prepublish": "cross-env BABEL_ENV=publish babel src --out-dir dist --ignore /__tests__/"
+  },
+  "files": [
+    "LICENSE-MIT",
+    "dist"
+  ],
+  "license": "MIT",
+  "dependencies": {
+    "cssnano-util-get-arguments": "^4.0.0",
+    "cssnano-util-get-match": "^4.0.0",
+    "postcss": "^7.0.0",
+    "postcss-value-parser": "^3.0.0"
+  },
+  "devDependencies": {
+    "babel-cli": "^6.0.0",
+    "cross-env": "^5.0.0"
+  },
+  "author": {
+    "name": "Ben Briggs",
+    "email": "beneb.info@gmail.com",
+    "url": "http://beneb.info"
+  },
+  "repository": "cssnano/cssnano",
+  "bugs": {
+    "url": "https://github.com/cssnano/cssnano/issues"
+  },
+  "homepage": "https://github.com/cssnano/cssnano",
+  "engines": {
+    "node": ">=6.9.0"
+  }
+}