Write list of files into a js file using npm - file

Question

I'd like to have a script for npm that did the following:
Gets a list of files inside a folder (and subfolders)
Write it into a JS file, with the following format:
module.exports = [
"folder/filename.png",
"folder/subfolder/filename.png"
];
I'm currently doing it like this using the cli in Linux:
echo 'module.exports = [' | tee files.js && find . -name "*png" | sed s:"./":" '": | sed s:".png":".png',": | tee files.js --append && echo '];' | tee files.js --append
Which is a bit contrived and not really cross platform. Are there any npm packages that provide similar functionality? I'm kinda lost on it.

Answer 1

Well don't I feel silly. Had never used node directly but it was trivial to write a script to do this.
#!/usr/bin/env node
var fs = require('fs');
var list = [];
function traverse(folder) {
var files = fs.readdirSync(folder);
for (var i = 0; i < files.length; i++) {
if (files[i].indexOf('.png') > -1 || files[i].indexOf('.jpg') > -1) {
list.push(folder + "/" + files[i]);
console.log(i + folder + "/" + files[i]);
} else {
var path = folder + "/" + files[i];
if (fs.lstatSync(path).isDirectory()) {
traverse(path);
}
}
}
}
function start() {
traverse('./images');
var string = "module.exports = [\n";
for (var i = 0; i < list.length; i++) {
string += " '" + list[i];
if (list[i] !== list[list.length - 1]) {
string += "',\n";
} else {
string += "'\n];"
}
}
fs.writeFile("./src/assets.js", string, function (err) {
if (err) {
return console.log(err);
}
console.log("Assets file was updated!");
});
}
start();