first commit

Author: sithmel

.eslint

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+{
+    "rules": {
+        "indent": [2, 2],
+        "quotes": [2, "single"],
+        "linebreak-style": [2, "unix"],
+        "semi": [2, "always"],
+        "no-underscore-dangle": 0,
+        "curly": 0,
+        "no-use-before-define": [2, "nofunc"],
+        "spaced-comment": [2, "always"],
+        "space-before-function-paren": [2, { "anonymous": "always", "named": "never" }],
+        "space-after-keywords": [2, "always"],
+        "space-before-blocks": [2, "always"],
+        "semi-spacing": [2, {"before": false, "after": true}],
+    },
+    "env": {
+        "browser": true,
+        "node": true,
+        "mocha": true
+    }
+}

.gitignore

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+node_modules
+bower_components

LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2017 Maurizio Lupo
+
+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.

README.md

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+var _get = require('lodash/get');
+var _set = require('lodash/set');
+var _isUndefined = require('lodash/isUndefined');
+var expandPathExpression = require('./lib/expandPathExpression');
+
+function Sieve(paths) {
+  this._paths = paths || [];
+}
+
+Sieve.prototype.pass = function pass(path) {
+  this._paths.push(path);
+};
+
+Sieve.prototype.toJSON = function () {
+  return JSON.stringify(this._paths);
+};
+
+Sieve.prototype.apply = function (obj) {
+  const output = {};
+  for (const pathEpression of this._paths) {
+    for (const path of expandPathExpression(pathEpression, obj)) {
+      const value = _get(obj, path);
+      if (!_isUndefined(value)) {
+        _set(output, path, value);
+      }
+    }
+  }
+  return output;
+};

index.js

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+var _toPath = require('lodash/toPath');
+
+function expandExpressionFragment(path, expression, obj) {
+  yield path.concat(expression);
+}
+
+function* iterOverPath(pathIter, expression, obj) {
+  if (pathIter) {
+    for (const path of pathIter) {
+      yield* expandExpressionFragment(path, expression, obj);
+    }
+  } else {
+    yield* expandExpressionFragment([], expression, obj);
+  }
+}
+
+function* expandPathExpression(pathExpression, obj) {
+  let iterPath;
+  const pathArray = _toPath(pathExpression);
+  for (const pathFragment of pathArray) {
+    iterPath = iterOverPath(iterPath, pathFragment, obj);
+  }
+  yield* iterPath;
+}
+
+// [3:6] [:2] [3:] [5:-2] slice
+// * all
+// [key1|key2]
+
+module.exports = expandPathExpression;

lib/expandPathExpression.js

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+{
+  "name": "obj-sieve",
+  "version": "0.0.0",
+  "description": "Skim an object of unnecessary data",
+  "main": "index.js",
+  "scripts": {
+    "test": "mocha tests/*.js",
+    "watch": "npm run test -- -w",
+    "lint": "eslint --ext .js ./src ./tests",
+    "release:major": "npm-release major",
+    "release:minor": "npm-release minor",
+    "release:patch": "npm-release patch",
+    "precommit": "npm run lint",
+    "prepush": "npm run test"
+  },
+  "keyword": [
+    "redux",
+    "immutable",
+    "diff",
+    "patch"
+  ],
+  "repository": "[email protected]:sithmel/obj-sieve.git",
+  "author": "Maurizio Lupo <[email protected]>",
+  "license": "MIT",
+  "dependencies": {
+    "lodash": "^4.17.4"
+  },
+  "devDependencies": {
+    "chai": "^4.1.2",
+    "eslint": "^4.9.0",
+    "husky": "^0.14.3",
+    "mocha": "^4.0.1",
+    "npm-release": "^1.0.0"
+  }
+}