how to include node_modules for the MTA build

[lucky_li]

By default, the node_modules will not be included into the content during the mbt build process. Whether there are some setting to force the mta to include the node_modules? As our project need to change some files after do the normal npm install'.

One trick I can figure out is that: we rename the "node_modules" to another name, and in the "start" script we build a softlink.

[lucky_li]

Just try another way to resolve the issue, but it failed also.

1: First install the library via "npm i""

2: Change the "node_modules" to another name like "node_modules_content"

3: In the package.json, change the script to create a soft link from the node_modules_content to 'node_modules' like the following

"scripts": {

"start": "ln -s node_modules_content node_modules; node --inspect ./index.js"

},

4: Run the "mbt build" to build the mta. So now the node_modules_content will be included

I guess this way should work. But during the test, it will fail with the error

"Cannot find module".

[lucky_li]

I think the reason (just guess,need to check the steps provided by the nodejs-buildpacks): for the nodejs application, even the package.json don't include any dependency, it will create the node_modules. this node_modules will overwrite the original node_module.

I try another way, it still not work:

try {

if (!fs.existsSync("./node_modules")){

console.error(" !! node_modules not existed, rename it");

fs.renameSync("./node_modules_content", "./node_modules", "dir");

// in window, it runs fine. But in BTP, maybe it is not really sync

while (true) {

if (!fs.existsSync("./node_modules")) {

console.error(" node_modules not exist afer the symlinkSync");

} else {

console.error(" **** now node_modules exists,");

break;

}

}

tryStartExpress();

} else {

console.error(" ** node_modules existed");

tryStartExpress();

}

} catch (error) {

console.error("$$$ error happend:", error);

}