gulp-dependencies-changed
v1.0.3
Published
Smart incremental building by dependency analysis
Downloads
1,346
Readme
gulp-dependencies-changed
Smart incremental building by dependency analysis.
Installation
npm install --save-dev gulp-dependencies-changed
Usage
var less = require('gulp-less');
var changed = require('gulp-dependencies-changed');
var Path = require('path');
var rename = require('rename');
gulp.task('less', function() {
return gulp.src('./less/**/*.less')
// Analyze dependencies for less. Pass through
// only files that its depending files are changed.
.pipe(changed({
matcher: /@import ['"]?([^'"]+)['"]?;/g,
dest: function(srcRelPath, srcBasePath) {
// It should return dest file path.
return rename(srcPath, function(fileObj) {
return {
dirname: Path.join('public/css' + fileObj.dirname)
extname: 'css',
};
});
},
}))
.pipe(less())
.pipe(gulp.dest('./public/css'));
});
API
changed(options)
Only pass through dependent files that depending to changed files
options
matcher
Type: RegExp
This RegExp MUST include only a capturing group and SHOULD be global match.
The result of the match will be given to a pathResolver
.
dest
Type: function(string, string): string
This function take an argument (a relative file path and the base path).
The source file path is exactly equivalent to path.relative(vinylFile.path, vinylFile.base)
.
It SHOULD return the file path for the dest file path.
The return value is used as a target of comparison.
You can easily rename by using rename.
pathResolver
Type: function(string, string): string
Default: changed.relativeResolver
This function take 2 arguments (a dependent file path, the depended file path captured by matcher
) and MUST return a file path for the depending file.
If omitted, it takes a related file path from the dependent file.
If file extensions is omitted, you can complement the file extensions by the function.
comparator
Type: function(VinylFile, VinylFile): boolean
Default: changed.compareByMtime
This function take 2 arguments (a depending file and the dependent file) and it MUST return true
when the depending is newer than the dependent file.
If omitted, it compare by the both mtime.
debug
Type: boolean
Default: false
Print debug messages when it is truthy.
License
MIT