feat: add custom batch-sizing to cli options

README.md

@@ -76,6 +76,7 @@ Otherwise, you can install manually by downloading the latest release then addin
         --number-of-colors <n>  ImageAlpha palette size, defaults to 256
         --quality <min>-<max>   ImageAlpha quality range from 0-100, defaults to 65-80
         --speed <n>             ImageAlpha speed from 1 (brute-force) to 10 (fastest), defaults to 1
+        --batch-size <n>        set batch size for processing images, defaults to 300
         -h, --help              output usage information
 
       Supported Apps:

src/constants.ts

@@ -45,6 +45,7 @@ export const VERSION = manifest.version;
 export const PNGQUANT_NUMBER_OF_COLORS = '256';
 export const PNGQUANT_QUALITY = '65-80';
 export const PNGQUANT_SPEED = '1';
+export const BATCH_SIZE = '300';
 export const PNGQUANT_BIN_PATH = '/Applications/ImageAlpha.app/Contents/MacOS/pngquant';
 export const IMAGEOPTIM_BIN_PATH = '/Applications/ImageOptim.app/Contents/MacOS/ImageOptim';
 

src/imageoptim.ts

@@ -4,6 +4,7 @@ import { sync } from 'globby';
 import { homedir } from 'os';
 import { cli } from './';
 import {
+  BATCH_SIZE,
   PNGQUANT_NUMBER_OF_COLORS,
   PNGQUANT_QUALITY,
   PNGQUANT_SPEED,
@@ -37,6 +38,10 @@ program
   .option(
     '--speed <n>',
     `ImageAlpha speed from 1 (brute-force) to 10 (fastest), defaults to ${PNGQUANT_SPEED}`,
+  )
+  .option(
+    '--batch-size <n>',
+    `batch size (lower this number for older machines), defaults to ${BATCH_SIZE}`,
   );
 
 program.on('--help', () => {
@@ -88,7 +93,7 @@ const filePaths = sync(patterns.map((pattern) => pattern.replace('~', homedir())
 const options = program.opts();
 
 cli({
-  batchSize: 300,
+  batchSize: options.batchSize || BATCH_SIZE,
   enabled: {
     color: options.color === true,
     imageAlpha: options.imagealpha === true,