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README.md

gulp-srcset

NPM version Node version Dependencies status Build status Dependabot badge

Highly customizable plugin for generating responsive images.

Install

npm i -D gulp-srcset
# or
yarn add -D gulp-srcset

Usage

import srcset from 'gulp-srcset';

gulp.task('images', () =>
    gulp.src('src/*.{jpg,png}')
        .pipe(srcset([{
            match:  '(min-width: 3000px)',
            width:  [1920, 1280, 1024, 860, 540, 320],
            format: ['jpg', 'webp']
        }], {
            skipOptimization: true
        }))
        .pipe(gulp.dest('static'))
);

Plugin options:

interface ICommonConfig {
    /**
     * Object with Sharp configs for each supported format.
     */
    processing?: Partial<IProcessingConfig>;
    /**
     * Object with imagemin plugins for each format.
     */
    optimization?: Partial<IOptimizationConfig>;
    /**
     * Do not optimize output images.
     */
    skipOptimization?: boolean;
    /**
     * Generate images with higher resolution than they's sources are.
     */
    scalingUp?: boolean;
    /**
     * Postfix string or function to generate postfix for image.
     */
    postfix?: Postfix;
}

/**
 * First argument: IPluginRule[]
 */
interface IPluginRule extends ICommonConfig {
    /**
     * There is support of 3 types of matchers:
     * 1. Glob pattern of file path;
     * 2. Media query to match image by size;
     * 3. `(path: string, size: ISize, source: Vinyl) => boolean` function.
     */
    match?: Matcher;
    /**
     * Output image(s) formats to convert.
     */
    format?: SupportedExtension|SupportedExtension[];
    /**
     * Output image(s) widths to resize, value less than or equal to 1 will be detected as multiplier.
     */
    width?: number|number[];
}

/**
 * Second argument: 
 */
interface IPluginConfig extends ICommonConfig {
    /**
     * Print additional info about progress.
     */
    verbose?: boolean;
}

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Highly customizable plugin for generating responsive images.

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