mirror of
https://github.com/Nezumi-2711/typescript-training.git
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Init sample
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.parcel-cache
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node_modules
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dist
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Vendored
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{
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// Use IntelliSense to learn about possible attributes.
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// Hover to view descriptions of existing attributes.
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// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
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"version": "0.2.0",
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"configurations": [
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{
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"type": "msedge",
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"request": "launch",
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"name": "Launch Edge against localhost",
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"url": "http://localhost:1234",
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"webRoot": "${workspaceFolder}",
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"sourceMapPathOverrides": {
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"/__parcel_source_root/*": "${webRoot}/*"
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}
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}
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]
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}
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Generated
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Load Diff
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{
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"name": "sample",
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"version": "1.0.0",
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"description": "",
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"main": "index.js",
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"scripts": {
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"test": "echo \"Error: no test specified\" && exit 1",
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"start": "parcel src/*.html"
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},
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"keywords": [],
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"author": "",
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"license": "ISC",
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"dependencies": {
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"parcel": "^2.9.3"
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}
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}
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<title>Typescript</title>
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</head>
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<body>
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<h1>Typescript training</h1>
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<script type="module" src="index.ts"></script>
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</body>
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</html>
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// Define variable
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// let age: number = 20;
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// // age = "12";
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// console.log(age);
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// Tuples
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// let user: [number, string] = [1, "Mosh"];
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// user.push(123);
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// user.push(456);
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// user.push("test");
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// console.log(user);
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// Enum
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// enum Size {
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// Small = 1,
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// Medium,
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// Large,
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// }
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// let mySize: Size = Size.Medium;
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// console.log(mySize);
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// Functions
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// function calculateTax(income: number, taxYear = 2022): number {
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// if (taxYear < 2022) return income * 1.2;
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// return income * 1.3;
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// }
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// console.log(calculateTax(10_000));
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// Object
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// let employee: {
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// readonly id: number;
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// name: string;
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// age: number;
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// } = {
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// id: 1,
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// name: "Nezumi",
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// age: 23,
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// };
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// employee.id;
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// // employee.id = 1
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// console.log(employee);
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// Type Alias
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// type Employee = {
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// readonly id: number;
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// name: string;
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// retire: () => string;
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// };
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// let employee2: Employee = {
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// id: 1,
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// name: "Loi Phan",
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// retire: () => {
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// const date = new Date();
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// return date.toISOString();
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// },
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// };
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// console.log(employee2.retire());
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// Union types
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// function kgToLbs(weight: number | string): number {
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// // Narrowing
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// if (typeof weight === "number") return weight * 2.2;
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// else {
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// const index: number = weight.indexOf("kg");
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// const number: number = parseInt(weight.substring(0, index));
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// return number * 2.2;
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// }
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// }
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// console.log(kgToLbs(10));
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// console.log(kgToLbs("10 kg"));
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// Intersection Type
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// type Person = {
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// name: string;
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// age: number;
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// };
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// type Employee = {
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// position: string;
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// experiment: number;
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// };
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// type Information = Person & Employee;
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// let info: Information = {
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// name: "Nezumi",
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// age: 23,
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// position: "Intern",
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// experiment: 3,
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// };
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// console.log(info);
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// Literal Types
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// type Quantity = 50 | 100;
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// let quantity: Quantity = 100;
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// Nullable type
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// function greet(name: string | null | undefined) {
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// if(name)
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// console.log(name.toUpperCase());
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// }
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// greet(undefined);
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// Optional Chaining
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// type Customer = {
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// birthday?: Date;
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// };
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// function getCustomer(id: number): Customer | null | undefined {
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// return id === 0 ? null : { birthday: new Date() };
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// }
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// let customer = getCustomer(1);
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// console.log(customer?.birthday?.getDate);
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{
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"compilerOptions": {
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/* Visit https://aka.ms/tsconfig to read more about this file */
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/* Projects */
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// "incremental": true, /* Save .tsbuildinfo files to allow for incremental compilation of projects. */
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// "composite": true, /* Enable constraints that allow a TypeScript project to be used with project references. */
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// "tsBuildInfoFile": "./.tsbuildinfo", /* Specify the path to .tsbuildinfo incremental compilation file. */
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// "disableSourceOfProjectReferenceRedirect": true, /* Disable preferring source files instead of declaration files when referencing composite projects. */
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// "disableSolutionSearching": true, /* Opt a project out of multi-project reference checking when editing. */
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// "disableReferencedProjectLoad": true, /* Reduce the number of projects loaded automatically by TypeScript. */
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/* Language and Environment */
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"target": "es2016" /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */,
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// "lib": [], /* Specify a set of bundled library declaration files that describe the target runtime environment. */
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// "jsx": "preserve", /* Specify what JSX code is generated. */
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// "experimentalDecorators": true, /* Enable experimental support for legacy experimental decorators. */
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// "emitDecoratorMetadata": true, /* Emit design-type metadata for decorated declarations in source files. */
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// "jsxFactory": "", /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */
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// "jsxFragmentFactory": "", /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */
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// "jsxImportSource": "", /* Specify module specifier used to import the JSX factory functions when using 'jsx: react-jsx*'. */
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// "reactNamespace": "", /* Specify the object invoked for 'createElement'. This only applies when targeting 'react' JSX emit. */
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// "noLib": true, /* Disable including any library files, including the default lib.d.ts. */
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// "useDefineForClassFields": true, /* Emit ECMAScript-standard-compliant class fields. */
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// "moduleDetection": "auto", /* Control what method is used to detect module-format JS files. */
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/* Modules */
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"module": "commonjs" /* Specify what module code is generated. */,
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"rootDir": "./src" /* Specify the root folder within your source files. */,
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// "moduleResolution": "node10", /* Specify how TypeScript looks up a file from a given module specifier. */
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// "baseUrl": "./", /* Specify the base directory to resolve non-relative module names. */
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// "paths": {}, /* Specify a set of entries that re-map imports to additional lookup locations. */
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// "rootDirs": [], /* Allow multiple folders to be treated as one when resolving modules. */
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// "typeRoots": [], /* Specify multiple folders that act like './node_modules/@types'. */
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// "types": [], /* Specify type package names to be included without being referenced in a source file. */
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// "allowUmdGlobalAccess": true, /* Allow accessing UMD globals from modules. */
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// "moduleSuffixes": [], /* List of file name suffixes to search when resolving a module. */
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// "allowImportingTsExtensions": true, /* Allow imports to include TypeScript file extensions. Requires '--moduleResolution bundler' and either '--noEmit' or '--emitDeclarationOnly' to be set. */
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// "resolvePackageJsonExports": true, /* Use the package.json 'exports' field when resolving package imports. */
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// "resolvePackageJsonImports": true, /* Use the package.json 'imports' field when resolving imports. */
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// "customConditions": [], /* Conditions to set in addition to the resolver-specific defaults when resolving imports. */
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// "resolveJsonModule": true, /* Enable importing .json files. */
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// "allowArbitraryExtensions": true, /* Enable importing files with any extension, provided a declaration file is present. */
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// "noResolve": true, /* Disallow 'import's, 'require's or '<reference>'s from expanding the number of files TypeScript should add to a project. */
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/* JavaScript Support */
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// "allowJs": true, /* Allow JavaScript files to be a part of your program. Use the 'checkJS' option to get errors from these files. */
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// "checkJs": true, /* Enable error reporting in type-checked JavaScript files. */
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// "maxNodeModuleJsDepth": 1, /* Specify the maximum folder depth used for checking JavaScript files from 'node_modules'. Only applicable with 'allowJs'. */
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/* Emit */
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// "declaration": true, /* Generate .d.ts files from TypeScript and JavaScript files in your project. */
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// "declarationMap": true, /* Create sourcemaps for d.ts files. */
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// "emitDeclarationOnly": true, /* Only output d.ts files and not JavaScript files. */
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"sourceMap": true /* Create source map files for emitted JavaScript files. */,
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// "inlineSourceMap": true, /* Include sourcemap files inside the emitted JavaScript. */
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// "outFile": "./", /* Specify a file that bundles all outputs into one JavaScript file. If 'declaration' is true, also designates a file that bundles all .d.ts output. */
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"outDir": "./dist" /* Specify an output folder for all emitted files. */,
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"removeComments": true /* Disable emitting comments. */,
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// "noEmit": true, /* Disable emitting files from a compilation. */
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// "importHelpers": true, /* Allow importing helper functions from tslib once per project, instead of including them per-file. */
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// "importsNotUsedAsValues": "remove", /* Specify emit/checking behavior for imports that are only used for types. */
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// "downlevelIteration": true, /* Emit more compliant, but verbose and less performant JavaScript for iteration. */
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// "sourceRoot": "", /* Specify the root path for debuggers to find the reference source code. */
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// "mapRoot": "", /* Specify the location where debugger should locate map files instead of generated locations. */
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// "inlineSources": true, /* Include source code in the sourcemaps inside the emitted JavaScript. */
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// "emitBOM": true, /* Emit a UTF-8 Byte Order Mark (BOM) in the beginning of output files. */
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// "newLine": "crlf", /* Set the newline character for emitting files. */
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// "stripInternal": true, /* Disable emitting declarations that have '@internal' in their JSDoc comments. */
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// "noEmitHelpers": true, /* Disable generating custom helper functions like '__extends' in compiled output. */
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"noEmitOnError": true /* Disable emitting files if any type checking errors are reported. */,
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// "preserveConstEnums": true, /* Disable erasing 'const enum' declarations in generated code. */
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// "declarationDir": "./", /* Specify the output directory for generated declaration files. */
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// "preserveValueImports": true, /* Preserve unused imported values in the JavaScript output that would otherwise be removed. */
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/* Interop Constraints */
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// "isolatedModules": true, /* Ensure that each file can be safely transpiled without relying on other imports. */
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// "verbatimModuleSyntax": true, /* Do not transform or elide any imports or exports not marked as type-only, ensuring they are written in the output file's format based on the 'module' setting. */
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// "allowSyntheticDefaultImports": true, /* Allow 'import x from y' when a module doesn't have a default export. */
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"esModuleInterop": true /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */,
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// "preserveSymlinks": true, /* Disable resolving symlinks to their realpath. This correlates to the same flag in node. */
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"forceConsistentCasingInFileNames": true /* Ensure that casing is correct in imports. */,
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/* Type Checking */
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"strict": true /* Enable all strict type-checking options. */,
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// "noImplicitAny": true, /* Enable error reporting for expressions and declarations with an implied 'any' type. */
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// "strictNullChecks": true, /* When type checking, take into account 'null' and 'undefined'. */
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// "strictFunctionTypes": true, /* When assigning functions, check to ensure parameters and the return values are subtype-compatible. */
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// "strictBindCallApply": true, /* Check that the arguments for 'bind', 'call', and 'apply' methods match the original function. */
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// "strictPropertyInitialization": true, /* Check for class properties that are declared but not set in the constructor. */
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// "noImplicitThis": true, /* Enable error reporting when 'this' is given the type 'any'. */
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// "useUnknownInCatchVariables": true, /* Default catch clause variables as 'unknown' instead of 'any'. */
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// "alwaysStrict": true, /* Ensure 'use strict' is always emitted. */
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"noUnusedLocals": true /* Enable error reporting when local variables aren't read. */,
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"noUnusedParameters": true /* Raise an error when a function parameter isn't read. */,
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// "exactOptionalPropertyTypes": true, /* Interpret optional property types as written, rather than adding 'undefined'. */
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"noImplicitReturns": true /* Enable error reporting for codepaths that do not explicitly return in a function. */,
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// "noFallthroughCasesInSwitch": true, /* Enable error reporting for fallthrough cases in switch statements. */
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// "noUncheckedIndexedAccess": true, /* Add 'undefined' to a type when accessed using an index. */
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// "noImplicitOverride": true, /* Ensure overriding members in derived classes are marked with an override modifier. */
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// "noPropertyAccessFromIndexSignature": true, /* Enforces using indexed accessors for keys declared using an indexed type. */
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// "allowUnusedLabels": true, /* Disable error reporting for unused labels. */
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// "allowUnreachableCode": true, /* Disable error reporting for unreachable code. */
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/* Completeness */
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// "skipDefaultLibCheck": true, /* Skip type checking .d.ts files that are included with TypeScript. */
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"skipLibCheck": true /* Skip type checking all .d.ts files. */
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}
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}
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