76 lines
1.3 KiB
TypeScript
76 lines
1.3 KiB
TypeScript
|
import * as sharp from 'sharp';
|
||
|
|
|
||
|
|
export type IImage = {
|
||
|
|
data: Buffer;
|
||
|
|
ext: string;
|
||
|
|
type: string;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Convert to JPEG
|
||
|
|
* with resize, remove metadata, resolve orientation, stop animation
|
||
|
|
*/
|
||
|
|
export async function ConvertToJpeg(path: string, width: number, height: number): Promise<IImage> {
|
||
|
|
const data = await sharp(path)
|
||
|
|
.resize(width, height, {
|
||
|
|
fit: 'inside',
|
||
|
|
withoutEnlargement: true
|
||
|
|
})
|
||
|
|
.rotate()
|
||
|
|
.jpeg({
|
||
|
|
quality: 85,
|
||
|
|
progressive: true
|
||
|
|
})
|
||
|
|
.toBuffer();
|
||
|
|
|
||
|
|
return {
|
||
|
|
data,
|
||
|
|
ext: 'jpg',
|
||
|
|
type: 'image/jpeg'
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Convert to WebP
|
||
|
|
* with resize, remove metadata, resolve orientation, stop animation
|
||
|
|
*/
|
||
|
|
export async function ConvertToWebp(path: string, width: number, height: number): Promise<IImage> {
|
||
|
|
const data = await sharp(path)
|
||
|
|
.resize(width, height, {
|
||
|
|
fit: 'inside',
|
||
|
|
withoutEnlargement: true
|
||
|
|
})
|
||
|
|
.rotate()
|
||
|
|
.webp({
|
||
|
|
quality: 85
|
||
|
|
})
|
||
|
|
.toBuffer();
|
||
|
|
|
||
|
|
return {
|
||
|
|
data,
|
||
|
|
ext: 'webp',
|
||
|
|
type: 'image/webp'
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Convert to PNG
|
||
|
|
* with resize, remove metadata, resolve orientation, stop animation
|
||
|
|
*/
|
||
|
|
export async function ConvertToPng(path: string, width: number, height: number): Promise<IImage> {
|
||
|
|
const data = await sharp(path)
|
||
|
|
.resize(width, height, {
|
||
|
|
fit: 'inside',
|
||
|
|
withoutEnlargement: true
|
||
|
|
})
|
||
|
|
.rotate()
|
||
|
|
.png()
|
||
|
|
.toBuffer();
|
||
|
|
|
||
|
|
return {
|
||
|
|
data,
|
||
|
|
ext: 'png',
|
||
|
|
type: 'image/png'
|
||
|
|
};
|
||
|
|
}
|