trim-image

> Remove transparent pixels from image borders

Installation

Install with npm:
``
npm install --save trim-image
`

Params

`
trimImage(filename, filenameOut [, cropInfo|callback [, callback]]);

trimImage(filename, filenameOut);
trimImage(filename, filenameOut, cropInfo);
trimImage(filename, filenameOut, callback);
trimImage(filename, filenameOut, cropInfo, callback);
`

Property | Necessary | Type | Plugin default value
-------------------|-----------|--------------|-----------
filename | yes | string |
filenameOut | yes | string |
cropInfo | no | object | { top: true, right: true, bottom: true, left: true }
callback | no | function | (err) => {}

More detailed explanation is below.

#### filename
The input filename

#### filenameOut
The output filename

#### cropInfo
Defines which sides will be cut. By default, all sides are started as true

#### callback
The callback function for async flow and error handle

Usage

Simple example

`js
const trimImage = require('trim-image');
const fs = require('fs');

trimImage(images/${filename}, out/${filename});
`

Complete example


`js
const trimImage = require('trim-image');
const fs = require('fs');
const path = require('path');

const allFilesSync = (dir, fileList = []) => {
fs.readdirSync(dir).forEach(file => {
const filePath = path.join(dir, file)

fileList.push(
fs.statSync(filePath).isDirectory()
? {[file]: allFilesSync(filePath)}
: file
)
})
return fileList
}

const images = allFilesSync('images/').filter((filename) => filename.match(/\.png$/));

images.forEach((filename) => {
trimImage(images/${filename}, out/${filename}, { top: false, left: false }, (err) => {
if (err) {
console.log(err);
return;
}
});
});
``