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# library
Create a library
## Usage
```bash
nx generate library ...
```
```bash
nx g lib ... # same
```
By default, Nx will search for `library` in the default collection provisioned in `angular.json`.
You can specify the collection explicitly as follows:
```bash
nx g @nrwl/node:library ...
```
Show what will be generated without writing to disk:
```bash
nx g library ... --dry-run
```
### Examples
Generate libs/myapp/mylib:
```bash
nx g lib mylib --directory=myapp
```
## Options
### babelJest
Default: `false`
Type: `boolean`
Use babel instead ts-jest
### buildable
Default: `false`
Type: `boolean`
Generate a buildable library.
### directory
Alias(es): d
Type: `string`
A directory where the lib is placed
### importPath
Type: `string`
The library name used to import it, like @myorg/my-awesome-lib. Must be a valid npm name.
### js
Default: `false`
Type: `boolean`
Generate JavaScript files rather than TypeScript files.
### linter
Default: `eslint`
Type: `string`
Possible values: `eslint`, `tslint`
The tool to use for running lint checks.
### name
Type: `string`
Library name
### pascalCaseFiles
Alias(es): P
Default: `false`
Type: `boolean`
Use pascal case file names.
### publishable
Type: `boolean`
Create a publishable library.
### rootDir
Alias(es): srcRootForCompilationRoot
Type: `string`
Sets the rootDir for TypeScript compilation. When not defined, it uses the project's root property, or srcRootForCompilationRoot if it is defined.
### skipFormat
Default: `false`
Type: `boolean`
Skip formatting files
### skipTsConfig
Default: `false`
Type: `boolean`
Do not update tsconfig.base.json for development experience.
### tags
Alias(es): t
Type: `string`
Add tags to the library (used for linting)
### testEnvironment
Default: `jsdom`
Type: `string`
Possible values: `jsdom`, `node`
The test environment to use if unitTestRunner is set to jest
### unitTestRunner
Default: `jest`
Type: `string`
Possible values: `jest`, `none`
Test runner to use for unit tests