The extra R is becuase it's extra cute 😺
This module can be used as a CLI, with all of the exact same functionality as DCRAW itself. You can either install it globally:
npm install --global dcrawr# print helpdcrawr# convert an imagedcrawr -w -W IMG_1234.CR2
Or you can use it directly thoughnpx:
# convert an imagenpx dcrawr -w -W IMG_1234.CR2
This module only exposes the path to the correct DCRAW binary, which you can use directly throughchild_process:
constdcraw=require('dcrawr');const{ promisify}=require('util');const{ execFile}=require('child_process');constfs=require('fs');// -c will write the data to stdoutpromisify(execFile)(dcraw,['-c','my-image.dng'],{// hide the extra window on WindowswindowsHide:true,// we want the raw data, not a stringencoding:'buffer',// 8-bit PPMs are roughly 3x bigger than the original raw file// so you should set this number fairly highmaxBuffer:1024*1024*100}).then(result=>{// don't use the sync method... you get the idea thoughfs.writeFileSync('./my-image.ppm',result.stdout);}).catch(err=>{console.error(err);});
