jsDoc Typing

• @ts-check - first line of file

• @ts-ignore - ignore next line error

• @ts-expect-error - same with ignore but throw compiler error

• @param - what this do

• @type - type

const typeAssertedNumber = /** @type {number} */ (numberOrString)

• @typedef - new type

• @template - generic

• @class - constructor function type intead of @constructor

• @augments - extends manually for generic like instead of @extends

Constructor Generic Extends

JSDoc: document generic type that works for grandchildren classes

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https://stackoverflow.com/questions/51088894/jsdoc-document-generic-type-that-works-for-grandchildren-classes

Type Safe JavaScript with JSDoc

JSDoc comments are an alternative to TypeScript and Flow for type definitions in JavaScript. In combination with VSCode you can get type checking and IntelliSense just like TypeScript.

https://medium.com/@trukrs/type-safe-javascript-with-jsdoc-7a2a63209b76

Type casting supported

How to disable a ts rule for a specific line?

TypeScript 3.9 introduces a new magic comment. @ts-expect-error will: have same functionality as trigger an error, if actually no compiler error has been suppressed (= indicates useless flag) if (false) { // @ts-expect-error: Let's ignore a compile error like this unreachable code console.log("hello"); // compiles } // If @ts-expect-error didn't suppress anything at all, we now get a nice warning let flag = true; // ...

https://stackoverflow.com/questions/43618878/how-to-disable-a-ts-rule-for-a-specific-line

Documentation - JSDoc Reference

What JSDoc does TypeScript-powered JavaScript support?

https://www.typescriptlang.org/ko/docs/handbook/jsdoc-supported-types.html