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vinyl-bufferstream
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Deal with vinyl file contents, regardless of whether it is Buffer/Stream
var through = require('through2');
var VinylBufferStream = require('vinyl-bufferstream');
function yourGulpPlugin() {
var vinylBufferStream = new VinylBufferStream(function(buf, done) {
syncOrAsyncFn(buf, done);
});
return through.obj(function(file, enc, cb) {
vinylBufferStream(file, function(err, contents) {
if (err) {
self.emit('error', err);
} else {
file.contents = contents;
self.push(file);
}
cb();
});
});
}
npm install vinyl-bufferstream
var VinylBufferStream = require('vinyl-bufferstream');
(new
operator is optional.)
transformFunction: Function
Return: Function
The argument must be a function taking a Buffer
and a callback function as its first and second argument, which calls the callback function with passing Node-style callback arguments (error, result
).
file: Object
(vinyl file object)
callback: Function
When the file.contents
is a Buffer
, it will call the transformFunction with passing file.contents to the first argument.
When the file.contents
is a Stream
, it will call the transformFunction with passing the buffered stream of file.contents to the first argument.
When the file.contents
is a Stream
, it won't call the transformFunction.
error: Error
or null
contents: Buffer
or Stream
When the file.contents
is a Buffer
, contents will be a result that transformFunction produces.
When the file.contents
is a Stream
, contents will be a stream that emits a data transformFunction produces.
When the file.contents
is null
, contents will be null
.
var gulp = require('gulp');
var SVGO = require('svgo');
var through = require('through2');
var VinylBufferStream = require('vinyl-bufferstream');
function svgminPlugin(options) {
var svgo = new SVGO(options);
var vinylBufferStream = new VinylBufferStream(function(buf, done) {
svgo.optimize(String(buf), function(result) {
if (result.error) {
done(result.error);
return;
}
done(null, result.data);
});
});
return through.obj(function(file, enc, cb) {
vinylBufferStream(file, function(err, contents) {
if (err) {
self.emit('error', err);
} else {
file.contents = contents;
self.push(file);
}
cb();
});
});
}
gulp.task('buffer', function() {
return gulp.src('*.svg')
.pipe(svgminPlugin())
.pipe(gulp.dest('dest'));
});
gulp.task('stream', function() {
return gulp.src('*.svg', {buffer: false})
.pipe(svgminPlugin())
.pipe(gulp.dest('dest'));
});
Copyright (c) 2014 - 2015 Shinnosuke Watanabe
Licensed under the MIT License.
FAQs
Deal with vinyl file contents, regardless of whether it is Buffer/Stream
The npm package vinyl-bufferstream receives a total of 45,468 weekly downloads. As such, vinyl-bufferstream popularity was classified as popular.
We found that vinyl-bufferstream demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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