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init tests
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‎.gitignore‎

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dist
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node_modules
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.DS_Store
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.DS_Store
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.jest

‎.npmignore‎

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src
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example
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.DS_Store
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img
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img
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.jest
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jest
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jest.config.js
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.circleci
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__tests__

‎jest.config.js‎

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module.exports = {
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verbose: true,
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preset: "react-native",
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transform: {
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"\\.jsx?$": "<rootDir>/node_modules/react-native/jest/preprocessor.js",
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"^.+\\.tsx?$": "ts-jest",
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},
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modulePaths: ["<rootDir>"],
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globals: {
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"ts-jest": {
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babelConfig: true,
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diagnostics: false,
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},
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},
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transformIgnorePatterns: ["node_modules/(?!react-native|react-native-gesture-handler)/"],
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modulePathIgnorePatterns: [
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"example/node_modules/react-native/",
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"example/node_modules/react-native-gesture-handler/",
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],
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testPathIgnorePatterns: ["node_modules", "dist"],
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setupFiles: ["<rootDir>/jest/setup.js"],
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setupFilesAfterEnv: ["<rootDir>/jest/setupEnzymeAfterEnv.js"],
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cacheDirectory: ".jest/cache",
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};

‎jest/setup.js‎

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import { NativeModules as RNNativeModules } from "react-native";
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RNNativeModules.UIManager = RNNativeModules.UIManager || {};
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RNNativeModules.UIManager.RCTView = RNNativeModules.UIManager.RCTView || {};
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RNNativeModules.RNGestureHandlerModule = RNNativeModules.RNGestureHandlerModule || {
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State: { BEGAN: "BEGAN", FAILED: "FAILED", ACTIVE: "ACTIVE", END: "END" },
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attachGestureHandler: jest.fn(),
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createGestureHandler: jest.fn(),
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dropGestureHandler: jest.fn(),
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updateGestureHandler: jest.fn(),
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};
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RNNativeModules.PlatformConstants = RNNativeModules.PlatformConstants || {
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forceTouchAvailable: false,
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};

‎jest/setupEnzymeAfterEnv.js‎

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import "react-native";
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import "jest-enzyme";
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import Adapter from "enzyme-adapter-react-16";
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import Enzyme from "enzyme";
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/**
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* Set up DOM in node.js environment for Enzyme to mount to
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*/
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const { JSDOM } = require("jsdom");
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const jsdom = new JSDOM("<!doctype html><html><body></body></html>");
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const { window } = jsdom;
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function copyProps(src, target) {
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Object.defineProperties(target, {
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...Object.getOwnPropertyDescriptors(src),
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...Object.getOwnPropertyDescriptors(target),
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});
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}
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global.window = window;
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global.document = window.document;
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global.navigator = {
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userAgent: "node.js",
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};
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copyProps(window, global);
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/**
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* Set up Enzyme to mount to DOM, simulate events,
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* and inspect the DOM in tests.
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*/
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Enzyme.configure({ adapter: new Adapter() });
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/**
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* Ignore some expected warnings
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* see: https://jestjs.io/docs/en/tutorial-react.html#snapshot-testing-with-mocks-enzyme-and-react-16
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* see https://github.com/Root-App/react-native-mock-render/issues/6
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*/
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const originalConsoleError = console.error; // eslint-disable-line
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// eslint-disable-next-line
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console.error = message => {
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if (message.startsWith("Warning:")) {
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return;
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}
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originalConsoleError(message);
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};
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const originalConsoleLog = console.log; // eslint-disable-line
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// eslint-disable-next-line
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console.log = (descriptor, message) => {
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if (
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descriptor.startsWith("Warning:") ||
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((typeof message === "string" || message instanceof String) && message.startsWith("Warning:"))
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) {
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return;
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}
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if (
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descriptor.startsWith("TypeError:") ||
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((typeof message === "string" || message instanceof String) && message.startsWith("TypeError:"))
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) {
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return;
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}
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originalConsoleLog(message);
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};

‎package.json‎

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"react-native-gesture-handler": ">=1.3.0"
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},
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"devDependencies": {
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"@types/enzyme": "^3.10.3",
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"@types/enzyme-adapter-react-16": "^1.0.5",
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"@types/jest": "^24.0.18",
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"@types/lodash": "^4.14.138",
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"@types/react": "^16.9.2",
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"@types/react-native": "^0.60.9",
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"babel-jest": "^24.9.0",
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"enzyme": "^3.10.0",
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"enzyme-adapter-react-16": "^1.14.0",
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"jest": "^24.9.0",
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"typescript": "^3.6.2"
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"jest-enzyme": "^7.1.1",
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"react": ">=16.8.0",
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"react-dom": "^16.9.0",
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"react-native": "^0.60.5",
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"react-native-gesture-handler": "^1.4.1",
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"react-test-renderer": "^16.9.0",
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"ts-jest": "^24.1.0",
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"typescript": "^3.6.2",
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"weak": "^1.0.1"
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}
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}

‎src/__tests__/useGestureStore.unit.test.js‎

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import React from "react";
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import { Animated } from "react-native";
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import { mount } from "enzyme";
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import GesturePath from "../GesturePath";
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describe("<GesturePath />", () => {
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it("renders 3 coordinate points", () => {
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const wrapper = mount(
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<GesturePath path={[{ x: 0, y: 0 }, { x: 10, y: 0 }, { x: 20, y: 0 }]} />,
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);
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expect(wrapper.find(Animated.View)).toHaveLength(3);
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});
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});

‎tsconfig.json‎

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{
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"compilerOptions": {
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/* Basic Options */
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// "incremental": true, /* Enable incremental compilation */
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"target": "es5" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */,
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"module": "commonjs" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */,
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"lib": ["es2015"] /* Specify library files to be included in the compilation. */,
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// "allowJs": true, /* Allow javascript files to be compiled. */
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// "checkJs": true, /* Report errors in .js files. */
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"jsx": "react" /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */,
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"declaration": true /* Generates corresponding '.d.ts' file. */,
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"declarationMap": true /* Generates a sourcemap for each corresponding '.d.ts' file. */,
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// "sourceMap": true, /* Generates corresponding '.map' file. */
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// "outFile": "./", /* Concatenate and emit output to single file. */
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"outDir": "dist" /* Redirect output structure to the directory. */,
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"rootDir": "src" /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */,
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// "composite": true, /* Enable project compilation */
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// "tsBuildInfoFile": "./", /* Specify file to store incremental compilation information */
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// "removeComments": true, /* Do not emit comments to output. */
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// "noEmit": true /* Do not emit outputs. */,
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// "importHelpers": true, /* Import emit helpers from 'tslib'. */
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// "downlevelIteration": true, /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
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// "isolatedModules": true, /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
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/* Strict Type-Checking Options */
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"strict": true /* Enable all strict type-checking options. */,
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"noImplicitAny": true /* Raise error on expressions and declarations with an implied 'any' type. */,
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// "strictNullChecks": true, /* Enable strict null checks. */
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// "strictFunctionTypes": true, /* Enable strict checking of function types. */
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// "strictBindCallApply": true, /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
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// "strictPropertyInitialization": true, /* Enable strict checking of property initialization in classes. */
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// "noImplicitThis": true, /* Raise error on 'this' expressions with an implied 'any' type. */
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// "alwaysStrict": true, /* Parse in strict mode and emit "use strict" for each source file. */
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/* Additional Checks */
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// "noUnusedLocals": true, /* Report errors on unused locals. */
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// "noUnusedParameters": true, /* Report errors on unused parameters. */
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// "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */
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// "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */
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/* Module Resolution Options */
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// "moduleResolution": "node", /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
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// "baseUrl": "./", /* Base directory to resolve non-absolute module names. */
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// "paths": {}, /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
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// "rootDirs": [], /* List of root folders whose combined content represents the structure of the project at runtime. */
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// "typeRoots": ["src"] /* List of folders to include type definitions from. */,
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// "types": ["index.d.ts"] /* Type declaration files to be included in compilation. */,
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"allowSyntheticDefaultImports": true /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */,
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"esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
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// "preserveSymlinks": true, /* Do not resolve the real path of symlinks. */
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// "allowUmdGlobalAccess": true, /* Allow accessing UMD globals from modules. */
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/* Source Map Options */
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// "sourceRoot": "", /* Specify the location where debugger should locate TypeScript files instead of source locations. */
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// "mapRoot": "", /* Specify the location where debugger should locate map files instead of generated locations. */
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// "inlineSourceMap": true, /* Emit a single file with source maps instead of having a separate file. */
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// "inlineSources": true, /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
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/* Experimental Options */
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// "experimentalDecorators": true, /* Enables experimental support for ES7 decorators. */
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// "emitDecoratorMetadata": true, /* Enables experimental support for emitting type metadata for decorators. */
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"target": "es5",
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"module": "commonjs",
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"lib": ["esnext"],
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"allowJs": false,
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"jsx": "react",
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"declaration": true,
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"declarationMap": true,
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"outDir": "dist",
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"rootDir": "src",
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"strict": true,
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"noImplicitAny": true,
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"allowSyntheticDefaultImports": true,
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"esModuleInterop": true
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}
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// "include": ["./src/**/*", "./typings/**/*"]
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}

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