flow like the river

BACK_BACK/node_modules/postcss-normalize-timing-functions/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-timing-functions/README.md

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+# [postcss][postcss]-normalize-timing-functions
+
+> Normalize timing functions with PostCSS.
+
+## Install
+
+With [npm](https://npmjs.org/package/postcss-normalize-timing-functions) do:
+
+```
+npm install postcss-normalize-timing-functions --save
+```
+
+## Example
+
+### Input
+
+```css
+div {
+    animate: fade 3s cubic-bezier(0.42, 0, 1, 1)
+}
+```
+
+### Output
+
+```css
+div {
+    animate: fade 3s ease-in
+}
+``` 
+
+## 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-timing-functions/dist/index.js

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+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+
+var _postcss = require('postcss');
+
+var _postcssValueParser = require('postcss-value-parser');
+
+var _postcssValueParser2 = _interopRequireDefault(_postcssValueParser);
+
+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 }; }
+
+const getMatch = (0, _cssnanoUtilGetMatch2.default)(_map2.default);
+const getValue = node => parseFloat(node.value);
+
+function evenValues(list, index) {
+    return index % 2 === 0;
+}
+
+function reduce(node) {
+    if (node.type !== 'function') {
+        return false;
+    }
+
+    const lowerCasedValue = node.value.toLowerCase();
+
+    if (lowerCasedValue === 'steps') {
+        // Don't bother checking the step-end case as it has the same length
+        // as steps(1)
+        if (getValue(node.nodes[0]) === 1 && node.nodes[2] && node.nodes[2].value.toLowerCase() === 'start') {
+            node.type = 'word';
+            node.value = 'step-start';
+
+            delete node.nodes;
+
+            return;
+        }
+
+        // The end case is actually the browser default, so it isn't required.
+        if (node.nodes[2] && node.nodes[2].value.toLowerCase() === 'end') {
+            node.nodes = [node.nodes[0]];
+
+            return;
+        }
+
+        return false;
+    }
+
+    if (lowerCasedValue === 'cubic-bezier') {
+        const match = getMatch(node.nodes.filter(evenValues).map(getValue));
+
+        if (match) {
+            node.type = 'word';
+            node.value = match;
+
+            delete node.nodes;
+
+            return;
+        }
+    }
+}
+
+exports.default = (0, _postcss.plugin)('postcss-normalize-timing-functions', () => {
+    return css => {
+        const cache = {};
+
+        css.walkDecls(/(animation|transition)(-timing-function|$)/i, decl => {
+            const value = decl.value;
+
+            if (cache[value]) {
+                decl.value = cache[value];
+
+                return;
+            }
+
+            const result = (0, _postcssValueParser2.default)(value).walk(reduce).toString();
+
+            decl.value = result;
+            cache[value] = result;
+        });
+    };
+});
+module.exports = exports['default'];

BACK_BACK/node_modules/postcss-normalize-timing-functions/dist/lib/map.js

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+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+exports.default = [['ease', [0.25, 0.1, 0.25, 1]], ['linear', [0, 0, 1, 1]], ['ease-in', [0.42, 0, 1, 1]], ['ease-out', [0, 0, 0.58, 1]], ['ease-in-out', [0.42, 0, 0.58, 1]]];
+module.exports = exports['default'];

BACK_BACK/node_modules/postcss-normalize-timing-functions/package.json

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+{
+  "name": "postcss-normalize-timing-functions",
+  "version": "4.0.2",
+  "description": "Normalize CSS animation/transition timing functions.",
+  "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-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"
+  }
+}