vinyl
Information
Package | vinyl |
Description | A virtual file format |
Node Version | >= 0.9 |
What is this?
Read this for more info about how this plays into the grand scheme of things https://medium.com/@eschoff/3828e8126466
File
var File = require('vinyl');
var coffeeFile = new File({
cwd: "/",
base: "/test/",
path: "/test/file.coffee",
contents: new Buffer("test = 123")
});
isVinyl
When checking if an object is a vinyl file, you should not use instanceof. Use the isVinyl function instead.
var File = require('vinyl');
var dummy = new File({stuff});
var notAFile = {};
File.isVinyl(dummy);
File.isVinyl(notAFile);
isCustomProp
Vinyl checks if a property is not managed internally, such as sourceMap
. This is than used in constructor(options)
when setting, and clone()
when copying properties.
var File = require('vinyl');
File.isCustomProp('sourceMap');
File.isCustomProp('path');
Read more in Extending Vinyl.
constructor(options)
options.cwd
Type: String
Default: process.cwd()
options.base
Used for relative pathing. Typically where a glob starts.
Type: String
Default: options.cwd
options.path
Full path to the file.
Type: String
Default: undefined
options.history
Path history. Has no effect if options.path
is passed.
Type: Array
Default: options.path ? [options.path] : []
options.stat
The result of an fs.stat call. See fs.Stats for more information.
Type: fs.Stats
Default: null
options.contents
File contents.
Type: Buffer, Stream, or null
Default: null
options.{custom}
Any other option properties will just be assigned to the new File object.
var File = require('vinyl');
var file = new File({foo: 'bar'});
file.foo === 'bar';
isBuffer()
Returns true if file.contents is a Buffer.
isStream()
Returns true if file.contents is a Stream.
isNull()
Returns true if file.contents is null.
clone([opt])
Returns a new File object with all attributes cloned.
By default custom attributes are deep-cloned.
If opt or opt.deep is false, custom attributes will not be deep-cloned.
If opt.contents is false, it will copy file.contents Buffer's reference.
pipe(stream[, opt])
If file.contents is a Buffer, it will write it to the stream.
If file.contents is a Stream, it will pipe it to the stream.
If file.contents is null, it will do nothing.
If opt.end is false, the destination stream will not be ended (same as node core).
Returns the stream.
inspect()
Returns a pretty String interpretation of the File. Useful for console.log.
contents
The Stream or Buffer of the file as it was passed in via options, or as the result of modification.
For example:
if (file.isBuffer()) {
console.log(file.contents.toString());
}
path
Absolute pathname string or undefined
. Setting to a different value pushes the old value to history
.
history
Array of path
values the file object has had, from history[0]
(original) through history[history.length - 1]
(current). history
and its elements should normally be treated as read-only and only altered indirectly by setting path
.
relative
Returns path.relative for the file base and file path.
Example:
var file = new File({
cwd: "/",
base: "/test/",
path: "/test/file.coffee"
});
console.log(file.relative);
dirname
Gets and sets path.dirname for the file path.
Example:
var file = new File({
cwd: "/",
base: "/test/",
path: "/test/file.coffee"
});
console.log(file.dirname);
file.dirname = '/specs';
console.log(file.dirname);
console.log(file.path);
basename
Gets and sets path.basename for the file path.
Example:
var file = new File({
cwd: "/",
base: "/test/",
path: "/test/file.coffee"
});
console.log(file.basename);
file.basename = 'file.js';
console.log(file.basename);
console.log(file.path);
stem
Gets and sets stem (filename without suffix) for the file path.
Example:
var file = new File({
cwd: "/",
base: "/test/",
path: "/test/file.coffee"
});
console.log(file.stem);
file.stem = 'foo';
console.log(file.stem);
console.log(file.path);
extname
Gets and sets path.extname for the file path.
Example:
var file = new File({
cwd: "/",
base: "/test/",
path: "/test/file.coffee"
});
console.log(file.extname);
file.extname = '.js';
console.log(file.extname);
console.log(file.path);
Extending Vinyl
When extending Vinyl into your own class with extra features, you need to think about a few things.
When you have your own properties that are managed internally, you need to extend the static isCustomProp
method to return false
when one of these properties is queried.
const File = require('vinyl');
const builtInProps = ['foo', '_foo'];
class SuperFile extends File {
constructor(options) {
super(options);
this._foo = 'example internal read-only value';
}
get foo() {
return this._foo;
}
static isCustomProp(name) {
return super.isCustomProp(name) && builtInProps.indexOf(name) === -1;
}
}
This makes properties foo
and _foo
ignored when cloning, and when passed in options to constructor(options)
so they don't get assigned to the new object.
Same goes for clone()
. If you have your own internal stuff that needs special handling during cloning, you should extend it to do so.