node-fixturify-project


When implementing JS build tooling it is common to have complete projects as
fixture data. Unfortunately fixtures committed to disk can be somewhat hard to
maintain and augment.

Basic Usage

``sh
npm install --save-dev fixturify-project
`

`js
const { Project } = require('fixturify-project');
const project = new Project('rsvp', '3.1.4', {
files: {
'index.js': 'module.exports = "Hello, World!"',
},
});

project.addDependency('mocha', '5.2.0');
project.addDependency('chai', '5.2.0');

project.pkg; // => the contents of package.json for the given project
project.files; // => read or write the set of files further

// if you don't set this, a new temp dir will be made for you when you write()
project.baseDir = 'some/base/dir/';

await project.write();

// after write(), you can read project.baseDir even if you didn't set it
expect(fs.existsSync(join(project.baseDir, 'index.js'))).to.eql(true);
`

The above example produces the following files (and most importantly the
appropriate file contents:

`sh
some/base/dir/package.json
some/base/dir/index.js
some/base/dir/node_modules/mocha/package.json
some/base/dir/node_modules/chai/package.json
`

$3

addDependency returns another Project instance, so you can nest arbitrarily deep:

`js
const { Project } = require('fixturify-project');

let project = new Project('rsvp');
let a = project.addDependency('a');
let b = a.addDependency('b');
let c = b.addDependency('c');

await project.write();
`

Which produces:

`sh
$TMPDIR/xxx/package.json
$TMPDIR/xxx/index.js
$TMPDIR/xxx/node_modules/a/package.json
$TMPDIR/xxx/node_modules/a/node_modules/b/package.json
$TMPDIR/xxx/node_modules/b/node_modules/b/node_modules/c/package.json
`

$3

Instead of creating all packages from scratch, you can link to real preexisting
packages. This lets you take a real working package and modify it and its
dependencies and watch how it behaves.

`js
const { Project } = require('fixturify-project');

let project = new Project();
let a = project.addDependency('a');

// explicit target
project.linkDependency('b', { target: '/example/b' });

// this will follow node resolution rules to lookup "c" from "../elsewhere"
project.linkDependency('c', { baseDir: '/example' });

// this will follow node resolution rules to lookup "my-aliased-name" from "../elsewhere"
project.linkDependency('d', { baseDir: '/example', resolveName: 'my-aliased-name' });

await project.write();
`

Produces:

`sh
$TMPDIR/xxx/package.json
$TMPDIR/xxx/index.js
$TMPDIR/xxx/node_modules/a/package.json
$TMPDIR/xxx/node_modules/a/node_modules/b -> /example/b
$TMPDIR/xxx/node_modules/b/node_modules/c -> /example/node_modules/c
$TMPDIR/xxx/node_modules/b/node_modules/d -> /example/node_modules/my-aliased-name
`

When constructing a whole Project from a directory, you can choose to link all
dependencies instead of copying them in as Projects:

`js
let project = Project.fromDir('./sample-project', { linkDeps: true });
project.files['extra.js'] = '// stuff';
await project.write();
`

This will generate a new copy of sample-project, with symlinks to all its
original dependencies, but with "extra.js" added.

By default, linkDeps will only link up dependencies (which is appropriate
for libraries). If you want to also include devDependencies (which is
appropriate for apps) you can use linkDevDeps` instead.

API

Project

Kind: global class

- node-fixturify-project
- Basic Usage
- Nesting Dependencies
- Linking to real dependencies
- API
- Project
- project.baseDir
- project.baseDir
- project.name : string
- project.name
- project.version : string
- project.version
- project.mergeFiles(dirJSON)
- project.write(dirJSON?)
- project.addDependency() ⇒
- project.addDevDependency() ⇒
- project.removeDependency(name)
- project.removeDevDependency(name)
- project.linkDependency(name)
- project.linkDevDependency(name)
- project.dependencyProjects() ⇒
- project.devDependencyProjects() ⇒
- project.clone() ⇒
- project.dispose()
- Project.fromDir(baseDir, opts) ⇒

$3

Sets the base directory of the project.

Kind: instance property of Project

| Param | Description |
| --- | --- |
| dir |

The directory path.

|

$3

Gets the base directory path, usually a tmp directory unless a baseDir has been explicitly set.

Kind: instance property of Project
Read only: true

$3

Gets the package name from the package.json.

Kind: instance property of Project

$3

Sets the package name in the package.json.

Kind: instance property of Project

$3

Gets the version number from the package.json.

Kind: instance property of Project

$3

Sets the version number in the package.json.

Kind: instance property of Project

$3

Merges an object containing a directory represention with the existing files.

Kind: instance method of Project

| Param | Description |
| --- | --- |
| dirJSON |

An object containing a directory representation to merge.

|

$3

Writes the existing files property containing a directory representation to the tmp directory.

Kind: instance method of Project

| Param | Description |
| --- | --- |
| dirJSON? |

An optional object containing a directory representation to write.

|

$3

Adds a dependency to the Project's package.json.

Kind: instance method of Project
Returns:

• The Project instance.

$3

Adds a devDependency to the Project's package.json.

Kind: instance method of Project
Returns:

• The Project instance.

$3

Removes a dependency to the Project's package.json.

Kind: instance method of Project

| Param | Description |
| --- | --- |
| name |

The name of the dependency to remove.

|

$3

Removes a devDependency.

Kind: instance method of Project

| Param | Description |
| --- | --- |
| name |

The name of the devDependency to remove.

|

$3

Links a dependency.

Kind: instance method of Project

| Param | Description |
| --- | --- |
| name |

The name of the dependency to link.

|

$3

Links a devDependency.

Kind: instance method of Project

| Param | Description |
| --- | --- |
| name |

The name of the dependency to link.

|

$3

Kind: instance method of Project
Returns:

• An array of the dependencies for this Projct.

$3

Kind: instance method of Project
Returns:

• An array of the devDependencies for this Projct.

$3

Kind: instance method of Project
Returns:

• The cloned Project.

$3

Disposes of the tmp directory that the Project is stored in.

Kind: instance method of Project

$3

Reads an existing project from the specified base dir.

Kind: static method of Project
Returns:

• The deserialized Project.

| Param | Description |
| --- | --- |
| baseDir |

The base directory to read the project from.

|
| opts |

An options object.

|
| opts.linkDeps |

Include linking dependencies from the Project's node_modules.

|
| opts.linkDevDeps |

Include linking devDependencies from the Project's node_modules.

|