convert-heic.js

//Menu: Convert HEIC Images to JPEG or PNG

const FileType = await npm('file-type');
const convert = await npm('heic-convert');

// Seems to be no way to get this from the env...
const SCRIPT_NAME = 'convert-heic';
const SCRIPT_KIT_OUTPUTS_DIR = '/Users/james/ScriptKit Outputs';

// NOTE: Not rendering custom placeholder, reported here: https://github.com/johnlindquist/kit/discussions/332#discussioncomment-960487
const dropData = await drop('Drop HEIC image(s)');

// Ensure the selected files are all HEIC files
const images = await Promise.all(
  dropData.map(async ({ path: imagePath, name: rawNameIncludingExtension }) => {
    const buffer = await readFile(imagePath);
    const { ext, mime } = await FileType.fromBuffer(buffer);
    if (ext !== 'heic' || mime !== 'image/heic') {
      throw new Error(
        `The selected file "${rawNameIncludingExtension}" is not an HEIC file: ${JSON.stringify(
          {
            ext,
            mime,
          }
        )}`
      );
    }
    const { dir, name: imageName } = path.parse(imagePath);
    return {
      buffer,
      imageName,
      dir,
    };
  })
);

const format = await arg(
  'Which format would you like to convert the HEIC to:',
  async () => {
    const options = ['JPEG', 'PNG'];

    return options.map((opt) => {
      return {
        name: opt,
        value: opt,
      };
    });
  }
);

let qualityInput = await arg('Quality % (between 0 and 100)');

let qualityPercentage = 100;
try {
  qualityPercentage = parseInt(qualityInput || 100, 10);
} catch {}

// Create unique output dir for the run
const outputDir = path.join(
  SCRIPT_KIT_OUTPUTS_DIR,
  SCRIPT_NAME,
  new Date()
    .toISOString()
    .replace(/T/g, '_')
    .replace(/:/g, '-')
    .replace(/\./g, '-')
);

mkdir('-p', outputDir);

setHint('Converting, this will take a little while...');

for (const { buffer, imageName } of images) {
  const outputBuffer = await convert({
    buffer,
    format,
    quality: qualityPercentage / 100,
  });

  const outputFilePath = path.resolve(
    path.join(outputDir, `${imageName}.${format}`)
  );

  await writeFile(outputFilePath, outputBuffer);
}

// Launch finder with the results
$`open ${outputDir}`;