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{
"compilerOptions": {
// project options
"lib": [
"ESNext",
"dom"
], // specifies which default set of type definitions to use ("DOM", "ES6", etc)
"outDir": "build", // .js (as well as .d.ts, .js.map, etc.) files will be emitted into this directory.,
"removeComments": true, // Strips all comments from TypeScript files when converting into JavaScript- you rarely read compiled code so this saves space
"target": "ES6", // Target environment. Most modern browsers support ES6, but you may want to set it to newer or older. (defaults to ES3)
"module": "es2015",
// Module resolution
"baseUrl": "./", // Lets you set a base directory to resolve non-absolute module names.
"esModuleInterop": true, // fixes some issues TS originally had with the ES6 spec where TypeScript treats CommonJS/AMD/UMD modules similar to ES6 module
"moduleResolution": "node", // Pretty much always node for modern JS. Other option is "classic"
"paths": {}, // A series of entries which re-map imports to lookup locations relative to the baseUrl
// Source Map
"sourceMap": true, // enables the use of source maps for debuggers and error reporting etc
"sourceRoot": "/", // Specify the location where a debugger should locate TypeScript files instead of relative source locations.
// Strict Checks
"alwaysStrict": true, // Ensures that your files are parsed in the ECMAScript strict mode, and emit “use strict” for each source file.
"allowUnreachableCode": false, // pick up dead code paths
"noImplicitAny": true, // In some cases where no type annotations are present, TypeScript will fall back to a type of any for a variable when it cannot infer the type.
"strictNullChecks": 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.
// Linter Checks
"noImplicitReturns": true,
"noUncheckedIndexedAccess": true, // accessing index must always check for undefined
"noUnusedLocals": true, // Report errors on unused local variables.
"noUnusedParameters": true // Report errors on unused parameters in functions
},
"include": ["./**/*.ts"],
"exclude": [
"src/**/*.test.ts",
"node_modules/**/*"
],
}
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