unplugin-mtl/dist/chunk-JM42XYF5.mjs

Import .mtl files as strings 🧵 in Vite, Rollup, Webpack + more

// src/index.ts
import { createUnplugin } from "unplugin";

// src/utils/index.ts
import sharp from "sharp";
function loadImage(path2) {
  return sharp(path2);
}

// src/utils/parseImport.ts
function parseURL(rawURL) {
  return new URL(rawURL.replace(/#/g, "%23"), "file://");
}

// src/index.ts
import path from "path";
var resourceRegex = / (.*\.(jpeg|jpg|mpc|mps|mpb|cxc|cxs|cxb|png|tga|webp|avif|tiff))/g;
var mtlRegex = /\.mtl\??/;
var src_default = createUnplugin(() => {
  return {
    name: "unplugin-mtl",
    resolveId(id) {
      if (id.match(mtlRegex)) {
        return id;
      }
    },
    async transform(src, id) {
      if (id.endsWith(".mtl")) {
        const contents = String.raw`${src}`;
        const code = await getCode(contents, id);
        if (code) {
          return {
            code,
            map: null
          };
        }
      }
    }
  };
});
async function getCode(contents, id) {
  const matches = contents.match(resourceRegex);
  if (!matches) {
    return `
    export const mtl = \`${contents}\`
    export const extRef = false;
    export const extRefHelpers = [];
  `;
  }
  const idURL = parseURL(id).pathname;
  const imports = [];
  const extRefData = [];
  const uniqueMatches = matches.filter((value, index, self) => self.indexOf(value) === index);
  const trimmedMatches = uniqueMatches.map((item) => item.trim());
  let replacedContents = `\`${contents}\``;
  for (let i = 0; i < trimmedMatches.length; i++) {
    replacedContents = replacedContents.replace(new RegExp(trimmedMatches[i], "g"), "${asset" + i + "}");
    imports.push(`import asset${i} from './${trimmedMatches[i]}';`);
    const image = await loadImage(path.dirname(idURL) + "/" + trimmedMatches[i]);
    const metadata = await image.metadata();
    if (metadata) {
      const imgData = `{
        src: asset${i},
        width: ${metadata.width},
        height: ${metadata.height},
      }`;
      extRefData.push(imgData);
    }
  }
  return `
    ${imports.join("\n")}
    export const mtl = ${replacedContents};
    export const extRef = true;
    export const extRefHelpers = [${extRefData}];
  `;
}

export {
  src_default
};