NPM 更新所有依赖项

Simply change every dependency's version to

*

, then run

npm update --save

.

"dependencies": {
"express": "*",
"mongodb": "*",
"underscore": "*",
"rjs": "*",
"jade": "*",
"async": "*"
}

After:

"dependencies": {
"express": "~3.2.0",
"mongodb": "~1.2.14",
"underscore": "~1.4.4",
"rjs": "~2.10.0",
"jade": "~0.29.0",
"async": "~0.2.7"
}

Of course, this is the blunt hammer of updating dependencies. It's fine if—as you said—the project is empty and nothing can break.

On the other hand, if you're working in a more mature project, you probably want to verify that there are no breaking changes in your dependencies before upgrading.

To see which modules are outdated, just run

npm outdated

. It will list any installed dependencies that have newer versions available.