以编程方式安装提供其版本的NPM软件包

NPM NodeJS API没有很好的文档说明，但是检查代码会有所帮助。

在这里，我们找到以下字符串：

install.usage = "npm install"   + "nnpm install <pkg>"   + "nnpm install <pkg>@<tag>"   + "nnpm install <pkg>@<version>"   + "nnpm install <pkg>@<version range>"   + "nnpm install <folder>"   + "nnpm install <tarball file>"   + "nnpm install <tarball url>"   + "nnpm install <git:// url>"   + "nnpm install <github username>/<github project>"   + "nnCan specify one or more: npm install ./foo.tgz bar@stable /some/folder"   + "nIf no argument is supplied and ./npm-shrinkwrap.json is "   + "npresent, installs dependencies specified in the shrinkwrap."   + "nOtherwise, installs dependencies from ./package.json."

我的问题是关于版本的，所以我们可以做：

hello-world@0.0.1

0.0.1

hello-world

var npm = require("npm");npm.load({    loaded: false}, function (err) {  // catch errors  npm.commands.install(["hello-world@0.0.1"], function (er, data) {    // log the error or data  });  npm.on("log", function (message) {    // log the progress of the installation    console.log(message);  });});

我没有进行测试，但是我确信我们可以使用任何格式的

install.usage

我编写了一个函数，该函数将

dependencies

install

dependencies:

{   "hello-world": "0.0.1"}

该函数获取

package.json

function createNpmDependenciesArray (packageFilePath) {    var p = require(packageFilePath);    if (!p.dependencies) return [];    var deps = [];    for (var mod in p.dependencies) {        deps.push(mod + "@" + p.dependencies[mod]);    }    return deps;}