How to delete compiled JS files from previous typescript(.ts) files?
I came here seeing the title, and adding gulp into the mix was not a solution. So here is how I solved it.
Prefix your npm build script with rm -rf ./js/ &&
"scripts": { ... "build": "rm -rf ./js/ && tsc", ...},rm -rf ./js/ forcefully removes recursively all files and dirs below ./js/ doku rm in bash
&& says if successfully do the next command && in bash
with the latest tsc, you should be fine to do the clean with below command
tsc --build --cleanMy current tsc version for your reference
$ tsc --versionVersion 3.5.3Note that --clean flag is part of project-references and works only with it.
This solution is inspired in @Akash Kurian Jose's answer. Since his solution depends on the OS you're using, I'm adding this one which will work on any OS:
Add rimraf as a dev dependency:
"devDependencies": { "rimraf": "^3.0.1"}Then add these 3 scripts to your package.json:
"rimraf": "./node_modules/rimraf/bin.js","clean" : "rimraf js/","compile": "npm run clean && tsc -p ./"When executing npm run compile the js/ folder will be cleaned before compiling.