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NPM-UPDATE(1) NPM-UPDATE(1)

npm-update - Update a package

npm update [-g] [<pkg>...]
aliases: up, upgrade

This command will update all the packages listed to the latest version (specified by the tag config), respecting semver.
It will also install missing packages. As with all commands that install packages, the --dev flag will cause devDependencies to be processed as well.
If the -g flag is specified, this command will update globally installed packages.
If no package name is specified, all packages in the specified location (global or local) will be updated.
As of , thenpm updatewill only inspect top-level packages. Prior versions ofnpm would also recursively inspect all dependencies. To get the old behavior, usenpm --depth 9999 update`.
As of , thenpm updatewill changepackage.jsonto save the new version as the minimum required dependency. To get the old behavior, usenpm update --no-save`.

IMPORTANT VERSION NOTE: these examples assume or later. For older versions ofnpm , you must specify--depth 0` to get the behavior described below.
For the examples below, assume that the current package is app and it depends on dependencies, dep1 (dep2, .. etc.). The published versions of dep1 are:
{
  "dist-tags": { "latest": "1.2.2" },
  "versions": [
    "1.2.2",
    "1.2.1",
    "1.2.0",
    "1.1.2",
    "1.1.1",
    "1.0.0",
    "0.4.1",
    "0.4.0",
    "0.2.0"
  ]
}

If app's package.json contains:
"dependencies": {
  "dep1": "^1.1.1"
}
Then npm update will install , because1.2.2islatestand1.2.2 satisfies^1.1.1`.

However, if app's package.json contains:
"dependencies": {
  "dep1": "~1.1.1"
}
In this case, running npm update will install . Even though thelatest tag points to1.2.2, this version does not satisfy~1.1.1 , which is equivalent to>=1.1.1 <1.2.0. So the highest-sorting version that satisfies~1.1.1is used, which is1.1.2`.

Suppose app has a caret dependency on a version below 1.0.0, for example:
"dependencies": {
  "dep1": "^0.2.0"
}
npm update will install , because there are no other versions which satisfy^0.2.0`.
If the dependence were on ^0.4.0:
"dependencies": {
  "dep1": "^0.4.0"
}
Then npm update will install , because that is the highest-sorting version that satisfies^0.4.0(>= 0.4.0 <0.5.0`)

npm update -g will apply the update action to each globally installed package that is outdated -- that is, has a version that is different from latest.
NOTE: If a package has been upgraded to a version newer than latest, it will be downgraded.

npm help install
npm help outdated
npm help shrinkwrap
npm help 7 registry
npm help 5 folders
npm help ls
August 2018

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