Javascript 使用benchmark.js对各种node.js解压库进行基准测试

我正在尝试使用

benchmark.js

为一些流行的node.js解压库编写一个基准，主要是

adm-zip、yauzl&unzip

。但是，我不确定我是否正确编写了基准代码，因为对于异步解压的libs，我不断收到

Error:UNKNOWN，open'file-.zip'

错误

我创建了一个示例zip文件

file-.zip

的3个副本，每个库对应一个副本

以下是代码：

"use strict";

var fs = require("fs");

var Benchmark = require("benchmark");

var AdmZip = require("adm-zip"),
    yauzl = require("yauzl"),
    unzip = require("unzip");

var suite = new Benchmark.Suite;
var entryFile = "file.xml",
    targetDir = "./unzipped/";

suite
    .add("Adm-Zip#extractEntryTo", function() {
        var zip = new AdmZip("./file-adm-zip.zip");
        zip.extractEntryTo(entryFile, targetDir + "adm-zip/", /*maintainEntryPath*/false, /*overwrite*/true);
    })
    .add("YAUZL#open", function() {
        yauzl.open("./file-yauzl.zip", function(err, zip) {
            if (err) throw err;
            zip.on("entry", function(entry) {
                if (entryFile === (entry.fileName)) {
                    zip.openReadStream(entry, function(err, readStream) {
                        if (err) throw err;
                        // ensure parent directory exists, and then:
                        readStream.pipe(fs.createWriteStream(targetDir + "yauzl/" + entry.fileName));
                    });
                }
            });
            zip.once("end", function() {
                console.log("[YAUZL] Closing zip");
                zip.close();
            });
        });
    })
    .add("UNZIP#Parse", function() {
        fs.createReadStream("./file-unzip.zip")
            .pipe(unzip.Parse())
            .on("entry", function (entry) {
                var fileName = entry.path;
                if (fileName === entryFile) {
                    entry.pipe(fs.createWriteStream(targetDir + "unzip/" + fileName));
                } else {
                    entry.autodrain();
                }
            })
            .on("close", function() {
                console.log("[UNZIP] Closing zip");
            });
    })
    // add listeners
    .on("cycle", function(event) {
        console.log(String(event.target));
    })
    .on("complete", function() {
        console.log("Fastest is " + this.filter("fastest").pluck("name"));
    })
    // run async
    .run({ "async": true });

$ node benchmark-unzippers.js 
Adm-Zip#extractEntryTo x 2.56 ops/sec ±1.62% (11 runs sampled)
[YAUZL] Closing zip
[YAUZL] Closing zip
[YAUZL] Closing zip
[YAUZL] Closing zip

~/benchmark-unzippers.js:23
            if (err) throw err;
                           ^
Error: UNKNOWN, open 'file-yauzl.zip'

它失败是因为溪流没有被正确关闭吗？我不完全确定情况是否如此，因为我确实看到，例如，每次运行

YAUZL

测试时都会显示

[YAUZL]关闭zip

消息

下面是一个运行示例：

"use strict";

var fs = require("fs");

var Benchmark = require("benchmark");

var AdmZip = require("adm-zip"),
    yauzl = require("yauzl"),
    unzip = require("unzip");

var suite = new Benchmark.Suite;
var entryFile = "file.xml",
    targetDir = "./unzipped/";

suite
    .add("Adm-Zip#extractEntryTo", function() {
        var zip = new AdmZip("./file-adm-zip.zip");
        zip.extractEntryTo(entryFile, targetDir + "adm-zip/", /*maintainEntryPath*/false, /*overwrite*/true);
    })
    .add("YAUZL#open", function() {
        yauzl.open("./file-yauzl.zip", function(err, zip) {
            if (err) throw err;
            zip.on("entry", function(entry) {
                if (entryFile === (entry.fileName)) {
                    zip.openReadStream(entry, function(err, readStream) {
                        if (err) throw err;
                        // ensure parent directory exists, and then:
                        readStream.pipe(fs.createWriteStream(targetDir + "yauzl/" + entry.fileName));
                    });
                }
            });
            zip.once("end", function() {
                console.log("[YAUZL] Closing zip");
                zip.close();
            });
        });
    })
    .add("UNZIP#Parse", function() {
        fs.createReadStream("./file-unzip.zip")
            .pipe(unzip.Parse())
            .on("entry", function (entry) {
                var fileName = entry.path;
                if (fileName === entryFile) {
                    entry.pipe(fs.createWriteStream(targetDir + "unzip/" + fileName));
                } else {
                    entry.autodrain();
                }
            })
            .on("close", function() {
                console.log("[UNZIP] Closing zip");
            });
    })
    // add listeners
    .on("cycle", function(event) {
        console.log(String(event.target));
    })
    .on("complete", function() {
        console.log("Fastest is " + this.filter("fastest").pluck("name"));
    })
    // run async
    .run({ "async": true });

$ node benchmark-unzippers.js 
Adm-Zip#extractEntryTo x 2.56 ops/sec ±1.62% (11 runs sampled)
[YAUZL] Closing zip
[YAUZL] Closing zip
[YAUZL] Closing zip
[YAUZL] Closing zip

~/benchmark-unzippers.js:23
            if (err) throw err;
                           ^
Error: UNKNOWN, open 'file-yauzl.zip'

---

不完全确定这里发生了什么。

我在typescript中遇到了类似的问题，并意识到我正在写入的

文件流在我调用
yauzl
之前没有关闭

因此，在调用
yauzl
之前，我等待
filestream
上的
close
事件

您可能需要在
filestream
上为
close
事件尝试C#等效程序