OptiPNG is a PNG optimizer that recompresses image files to a smaller size, without losing any information
You probably want imagemin-optipng instead.
$ npm install --save optipng-bin
const {execFile} = require('child_process');
const optipng = require('optipng-bin');
execFile(optipng, ['-out', 'output.png', 'input.png'], err => {
console.log('Image minified!');
});$ npm install --global optipng-bin
$ optipng --help
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