ern add

Description

• Add one or more package (dependency) to the MiniApp

Syntax

ern add <packages..>

Options

--dev/-d

• Add the package(s) to the MiniApp devDependencies
• Checks are not performed to add development dependencies

--peer/-p

• Add the package(s) to the MiniApp peerDependencies
• Checks are not performed to add peer dependencies

Remarks

• The ern add <packages..> command is the ern equivalent of yarn add and npm install When you work with a MiniApp, always use ern add to add packages in place of yarn add or npm install.

• The ern add <packages..> command runs yarn add and it performs important additional compatibility checks.

• You don't need to specify an explicit version for a package that you add using ern add. If you add an explicit version for a package, it is ignored.

• If the package is declared in the current platform manifest, then the version from the manifest is used.

• The ern add <packages> command performs the following checks:
  • If the package is declared in the manifest, then ern installs the package at the version declared in the manifest.
  • If the package is not declared in the manifest, then additional checks are performed:
    • If the package contains native code in any way (the package itself is a native module or it transitively contains one or more native dependencies, the command denies the package installation until a configuration is added to the manifest for this package.
    • If the package contains only JavaScript code, then the command proceeds with the package installation without further checks.