TypeError: Cannot read property 'engine' of undefined about compress-images

[Yuriy-Svetlov]

Hello, Zgj233.
Thank you for your question.

You need do:

open console and enter command
npm install compress-images --save-dev

create to file in you folder, as expamle : img_min.js

Open img_min.js and paste sourse code

    var compress_images = require('compress-images'), INPUT_path_to_your_images, OUTPUT_path;

    INPUT_path_to_your_images = 'src/img/**/*.{jpg,JPG,jpeg,JPEG,png,svg,gif}';
    OUTPUT_path = 'build/img/';
    
    compress_images(INPUT_path_to_your_images, OUTPUT_path, {compress_force: false, statistic: true, autoupdate: true}, false,
                                                {jpg: {engine: 'mozjpeg', command: ['-quality', '60']}},
                                                {png: {engine: 'pngquant', command: ['--quality=20-50']}},
                                                {svg: {engine: 'svgo', command: '--multipass'}},
                                                {gif: {engine: 'gifsicle', command: ['--colors', '64', '--use-col=web']}}, function(){
    });

4.create dir and put you images
src/img/**/*.{jpg,JPG,jpeg,JPEG,png,svg,gif}

5.Create dir
build/img/ or build/

As example, open console and enter command:
node img_min.js

[Yuriy-Svetlov]

You can to see base example:
base example

[zgj233]

@semiromid thanks，According to what you said, I succeeded.

1. InputPath must be written as the wildcard form like src/img/**/*.{jpg,JPG,jpeg,JPEG,png,svg,gif}, couldn't I use a detail path like src/img/myDetailPath/one.png ?

2. What happens when I use npm install ? You download real pngquant lib or other real 'compress image lib' something like jpegtran, mozjpeg, webp,svgo, imagemagick ···
   If you do, how exactly do you do it, can you teach me? please.

3. When I run node compress-image.js command in your example project, img, png, gif were disposed successful. But throw error when dealing with SVG:

exec error : Error: Command failed: svgo --multipass -i src/img/my_post_images_1/NASA_logo.svg -o build/img/my_post_images_1/NASA_logo.svg
'svgo' is not recognized as an internal or external command,
operable program or batch file.

[Yuriy-Svetlov]

I updated example, check new version.
https://github.com/semiromid/compress-images/tree/master/example
read the manual
https://github.com/semiromid/compress-images/blob/master/example/Manual.txt

Write please if you will be get error.

1 You could use detail path like src/img/myDetailPath/one.png

2 You download
https://github.com/imagemin/pngquant-bin ----> https://pngquant.org/
and other lib. You can see to
https://github.com/semiromid/compress-images ---- > "Related"
You do not need to use npm install - check new version example.

3.check new version example.

[Yuriy-Svetlov]

Fix - https://github.com/semiromid/compress-images