Memory leak

[yangyaochia]

I tried to execute the following code, and observe the potential memory leak due to the decompress operation.

`

"use strict";

let path = require("path");
const decompress = require('decompress')
let fs = require("fs");

const used = process.memoryUsage();
for (let key in used) {
console.log(Memory: ${key} ${Math.round(used[key] / 1024 / 1024 * 100) / 100} MB);
}

let source = path.join(__dirname + "/example.zip");
let output = path.join(__dirname,"output")

decompress("./example.zip", "dist").then((files) => {
console.log("decompress completed")
console.log("-------------------------------")
const used = process.memoryUsage();
for (let key in used) {
console.log(Memory: ${key} ${Math.round(used[key] / 1024 / 1024 * 100) / 100} MB);
}
global.gc();
console.log("after garbage collection")
process.nextTick(function () {
console.log("after tick")
const used = process.memoryUsage();
for (let key in used) {
console.log(Memory: ${key} ${Math.round(used[key] / 1024 / 1024 * 100) / 100} MB);
}
});

setTimeout(function () {
    console.log("after timeout")
    const used = process.memoryUsage();
    for (let key in used) {
        console.log(`Memory: ${key} ${Math.round(used[key] / 1024 / 1024 * 100) / 100} MB`);
    }
}, 5000);

})
`

node --expose-gc decompress.js
Memory: rss 25 MB
Memory: heapTotal 12.73 MB
Memory: heapUsed 6.64 MB
Memory: external 0.09 MB
decompress completed

Memory: rss 4275.02 MB
Memory: heapTotal 12.23 MB
Memory: heapUsed 5.39 MB
Memory: external 3515.56 MB
after garbage collection
after tick
Memory: rss 1764.59 MB
Memory: heapTotal 12.23 MB
Memory: heapUsed 5.38 MB
Memory: external 1732.47 MB
after timeout
Memory: rss 1764.61 MB
Memory: heapTotal 12.23 MB
Memory: heapUsed 5.39 MB
Memory: external 1732.47 MB