As presented on DevDuck #8 - JavaScript meetup for developers (www.devduck.pl). Presentation by linkedin.com/in/daniel-chmielowiec-a99365a6

2. TheoryTheory
https://www.typescriptlang.org

3. TSTS JSJS
const foo = (bar: string): number => {
return bar.length;
}
alert(foo('Hello world!') * 3); //36
var foo = function (bar) {
return bar.length;
};
alert(foo('Hello world!') * 3); //36

4. Pros and ConsPros and Cons

5. API communicationAPI communication
DebuggingDebugging
Better syntax promptingBetter syntax prompting
https://github.com/chmieludaniel/dev-duck-8/blob/api-responses/src/components/Sample.tsx
https://github.com/chmieludaniel/dev-duck-8/blob/api-responses/src/services/ApiResource.ts
Sample 1.Sample 1.

8. 1.1.
Way more lines ofWay more lines of
codecode
https://github.com/chmieludaniel/dev-duck-8/blob/a-lot-of-code/src/services/ApiResource.ts

9. 2.2.
Not all of JS libsNot all of JS libs
have typingshave typings

10. 3.3.
Not all of typings areNot all of typings are
100% correct100% correct

11. Sample 2.Sample 2.
https://github.com/chmieludaniel/dev-duck-8/blob/chart-js/src/components/Sample.tsx

12. 4.4.
Dynamic structuresDynamic structures

13. Sample 3.Sample 3.
https://github.com/chmieludaniel/dev-duck-8/blob/redux/src/components/Sample.tsx

14. Sample 4.Sample 4.
https://github.com/Lukasz-pluszczewski/perfect-immutable/blob/master/docs/EXAMPLES.md

16. ConclusionConclusion
1. TS gives you something
2. This something has its price

17. The end.The end.