tsconfig.json

{
	"$schema": "https://json.schemastore.org/tsconfig",
	"compilerOptions": {
		"baseUrl": ".",
		// Allow JavaScript files to be imported inside your project, instead of just .ts and .tsx files.
		"allowJs": true,
		// Allow import as default when the module does not explicitly specify a default export.
		"allowSyntheticDefaultImports": true,
		// Warn user if the code is provably unreachable due to the use of JavaScript syntax
		"allowUnreachableCode": false,
		// Ensures that your files are parsed in the ECMAScript strict mode, and emit “use strict” for each source file.
		"alwaysStrict": true,
		// Generate .d.ts files for every TypeScript or JavaScript file inside your project
		"declaration": false,
		// Offers a way to configure the root directory for where declaration files are emitted.
		// "declarationDir": "types"
		// Down leveling is TypeScript’s term for transpiling to an older version of JavaScript
		"downlevelIteration": true,
		// Only emit .d.ts files; do not emit .js files.
		"emitDeclarationOnly": false,
		// Enables experimental support for emitting type metadata for decorators which works with the module reflect-metadata.
		"emitDecoratorMetadata": true,
		"esModuleInterop": true,
		// Enables experimental support for decorators, which is in stage 2 of the TC39 standardization process.
		"experimentalDecorators": true,
		"forceConsistentCasingInFileNames": true,
		"generateCpuProfile": "profile.cpuprofile",
		// Helper functions are instead imported from the tslib module.
		"importHelpers": false,
		"incremental": true,
		"isolatedModules": true,
		"jsx": "preserve",
		"lib": ["dom", "dom.iterable", "esnext"],
		"module": "esnext",
		"noEmit": true,
		// With exactOptionalPropertyTypes enabled, TypeScript applies stricter rules around how it handles properties on type or interfaces which have a ? prefix.
		// "exactOptionalPropertyTypes": true,
		// Report errors for fallthrough cases in switch statements
		"noFallthroughCasesInSwitch": true,
		// TypeScript will issue an error whenever it would have inferred any
		"noImplicitAny": false,
		// Receive the error when override is missing
		"noImplicitOverride": false,
		// When enabled, TypeScript will check all code paths in a function to ensure they return a value.
		"noImplicitReturns": true,
		// Raise error on ‘this’ expressions with an implied ‘any’ type.
		"noImplicitThis": true,
		// Raise an error because the unknown field uses dot syntax instead of indexed syntax
		"noPropertyAccessFromIndexSignature": false,
		// Add undefined to any un-declared field in the type
		"noUncheckedIndexedAccess": true,
		// Report errors on unused local variables
		// Disable on development
		"noUnusedLocals": false,
		// Disable because for express middleware function
		"noUnusedParameters": false,
		// A series of entries which re-map imports to lookup locations relative to the baseUrl.
		"paths": {
			"@ken/*": ["*"]
		},
		// Do not erase const enum declarations in generated code.
		"preserveConstEnums": true,
		"removeComments": true,
		// Allows importing modules with a ‘.json’ extension, which is a common practice in node projects.
		"resolveJsonModule": true,
		"skipLibCheck": true,
		// Enables the generation of sourcemap files.
		// These files allow debuggers and other tools to display the original TypeScript source code when actually working with the emitted JavaScript files.
		"sourceMap": true,
		"strict": true,
		// When set, TypeScript will check that the built-in methods of functions call, bind, and apply
		// are invoked with correct argument for the underlying function
		"strictBindCallApply": true,
		// When enabled, this flag causes functions parameters to be checked more correctly.
		"strictFunctionTypes": true,
		// When strictNullChecks is true, null and undefined have their own distinct types
		// and you’ll get a type error if you try to use them where a concrete value is expected.
		"strictNullChecks": true,
		// When set to true, TypeScript will raise an error when a class property was declared but not set in the constructor.
		// We should use "!" for property we have not declared
		"strictPropertyInitialization": false,
		// Do not emit declarations for code that has an @internal annotation in its JSDoc comment.
		"stripInternal": true,
		"target": "es5",
		// Set the type of error to unknown
		"useUnknownInCatchVariables": true,
		"moduleResolution": "node"
	},
	"display": "Default",
	"exclude": [
		"node_modules",
		"build",
		".next",
		"dist",
		"test.ts",
		"output",
		"coverage",
		"*.spec.ts"
	],
	"include": ["next-env.d.ts", "**/*.ts", "**/*.tsx"]
}