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New axobject-query Maintainer Faces Backlash Over Controversial Decision to Support Legacy Node.js Versions
A JavaScript library maintainer is under fire after merging a controversial PR to support legacy versions of Node.js.
gulp-changed
Advanced tools
Readme
Only pass through changed files
No more wasting precious time on processing unchanged files.
By default it's only able to detect whether files in the stream changed. If you require something more advanced like knowing if imports/dependencies changed, create a custom comparator, or use another plugin.
npm install --save-dev gulp-changed
import gulp from 'gulp';
import changed from 'gulp-changed';
import ngAnnotate from 'gulp-ng-annotate'; // Just as an example
const SOURCE = 'src/*.js';
const DESTINATION = 'dist';
exports.default = () => (
gulp.src(SOURCE)
.pipe(changed(DESTINATION))
// `ngAnnotate` will only get the files that
// changed since the last time it was run
.pipe(ngAnnotate())
.pipe(gulp.dest(DESTINATION))
);
Type: string | Function
Destination directory. Same as you put into gulp.dest()
.
This is needed to be able to compare the current files with the destination files.
Can also be a function returning a destination directory path.
Type: object
Type: string
Default: process.cwd()
Working directory the folder is relative to.
Type: string
Extension of the destination files.
Useful if it differs from the original, like in the example below:
export const jade = () => (
gulp.src('src/**/*.jade')
.pipe(changed('app', {extension: '.html'}))
.pipe(jade())
.pipe(gulp.dest('app'))
);
Type: Function
Default: compareLastModifiedTime
Function that determines whether the source file is different from the destination file.
Named imports:
compareLastModifiedTime
compareContents
export const jade = () => (
gulp.src('src/**/*.jade')
.pipe(changed('app', {hasChanged: changed.compareContents}))
.pipe(jade())
.pipe(gulp.dest('app'))
);
You can also supply a custom comparator function which will receive the following arguments and should return Promise
.
stream
(transform object stream) - Should be used to queue sourceFile
if it passes some comparisonsourceFile
(Vinyl file object)destPath
(string) - Destination for sourceFile
as an absolute pathType: Function
Function to transform the path to the destination file. Should return the absolute path to the (renamed) destination file.
Useful if you rename your file later on, like in the below example:
export const marked = () => (
gulp.src('src/content/about.md')
.pipe(changed('dist', {transformPath: newPath => path.join(path.dirname(newPath), path.basename(newPath, '.md'), 'index.html')}))
.pipe(marked())
.pipe(rename(newPath => path.join(path.dirname(newPath), path.basename(newPath, '.md'), 'index.html'))))
.pipe(gulp.dest('dist'))
);
If you're looking to process source files in-place without any build output (formatting, linting, etc), have a look at gulp-changed-in-place.
FAQs
Only pass through changed files
The npm package gulp-changed receives a total of 30,082 weekly downloads. As such, gulp-changed popularity was classified as popular.
We found that gulp-changed demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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