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ramadevsign edited this page Aug 24, 2023 · 1 revision

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The tsconfig file and what each option means:

compilerOptions: This section contains various settings that affect how TypeScript compiles your code.

target: Specifies the version of ECMAScript (JavaScript) that the TypeScript code will be compiled to. In this case, it's set to "es5", which targets ECMAScript 5.

lib: Defines the library files that are available for TypeScript to use during compilation. It includes "dom" (DOM typings), "dom.iterable" (additional DOM typings for iterables), and "esnext" (typings for ECMAScript features not yet included in the standard).

allowJs: Enables TypeScript to compile JavaScript files along with TypeScript files. This can be useful when migrating existing JavaScript code to TypeScript.

skipLibCheck: Skips type checking of declaration files (files with .d.ts extension) which can help improve compilation speed.

strict: Enforces strict type checking rules. When set to true, it enables multiple strict type checking options like noImplicitAny, strictNullChecks, etc.

forceConsistentCasingInFileNames: Ensures that file references use consistent casing (e.g., "MyFile.ts" and "myfile.ts" won't be treated as different files).

noEmit: Prevents TypeScript from emitting compiled JavaScript files. This is set to true, so TypeScript won't generate output files.

incremental: Enables incremental compilation, which speeds up recompilation by saving information about the previous compilation.

esModuleInterop: Enables interoperability between CommonJS and ES Modules (ESM) by allowing import syntax to work with CommonJS modules.

module: Specifies the module system to use for generated JavaScript code. "esnext" indicates ES Modules (ESM).

moduleResolution: Determines how module imports are resolved. "node" means Node.js-style module resolution.

resolveJsonModule: Allows TypeScript to import JSON files as modules.

isolatedModules: Treats each file as a separate module. This can help catch errors but prevents certain optimizations.

jsx: Specifies how JSX (React's syntax extension) will be transformed. "preserve" means no transformation; JSX remains in the output.

include: An array of file patterns that determines which files should be included in the compilation. It includes TypeScript and TypeScript React files.

exclude: An array of file patterns that determines which files should be excluded from the compilation. In this case, "node_modules" is excluded.

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