How to convert a React Typescript project to Javascript ES5

Question

I have a react typescript project. And I need to convert the source code (NOT THE BUILD) to ES3 or ES5 Js. Because I want to use this code as a component in another react app.

Can you please suggest which preset and plugins to use to do the job?

I have tried the combination of the following babel presets and plugins

 "presets": [
  "@babel/preset-env",
  "@babel/preset-react",
  "@babel/preset-typescript",
  "@babel/preset-flow"
],
"plugins": [
  "@babel/plugin-proposal-class-properties",
  "@babel/plugin-proposal-optional-chaining",
  "@babel/plugin-transform-typescript"
],

Earlier I my project was plain reactJs without typescript and at that time I was able to transpile using following combination.

 "presets": [
  "@babel/preset-react"
],
"plugins": [
  "@babel/plugin-proposal-class-properties",
  "@babel/plugin-proposal-optional-chaining",
],

Kindly provide a solution to convert ReactJs + Typescript source code to es3/es5 js.

basarat · Accepted Answer · 2021-05-07 06:40:06Z

2

And I need to convert the source code (NOT THE BUILD) to ES3 or ES5 Js

If you want to Upgrade the src to TS you are best to do it by hand gradually. That said ES3 is valid TypeScript!. To enable TypeScript to use .js files you can enable the allowjs compiler option in tsconfig.json. Official docs on allowJs can be found here: https://www.typescriptlang.org/tsconfig#allowJs

If you want to compile TS to JavaScript then "@babel/preset-typescript", is exactly what you need. For finer control you can use options based on target : https://babeljs.io/docs/en/babel-preset-env#targets

edited May 7, 2021 at 6:40

answered May 7, 2021 at 6:15

basarat

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1 Comment

Jasmohan Singh Over a year ago

sir I tried using "@babel/preset-typescript". but it is not converting '.ts' files to '.js ' files. Along with this preset I am also using "@babel/preset-react" in preset and "@babel/plugin-proposal-class-properties", "@babel/plugin-proposal-optional-chaining" in plugins.

Shivakumar Doddamani · Accepted Answer · 2023-07-14 14:48:59Z

0

The only turnaround that I'm currently using is to just rename App.tsx to App.js and add your own Javascript code to App.js

edited Jul 14, 2023 at 14:48

answered Jul 14, 2023 at 14:47

Shivakumar Doddamani

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