Publish desktop updater 1.0.0-alpha.3

nodejs/index.js

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+'use strict';
+
+// Node package: image decoding + vectorization happen in wasm (no native
+// dependency); this layer only adds file I/O and a camelCase API.
+
+const fs = require('fs');
+const fsp = require('fs/promises');
+const wasm = require('./pkg/vtracer_wasm.js');
+
+/**
+ * Vectorize an encoded image (PNG/JPEG/GIF/BMP) Buffer/Uint8Array to an SVG string.
+ * @param {Uint8Array} buffer
+ * @param {object} [options]
+ * @returns {string}
+ */
+function convertBuffer(buffer, options = {}) {
+  return wasm.vectorize_bytes(buffer, options);
+}
+
+/**
+ * Vectorize a raw RGBA8 buffer (width*height*4 bytes) to an SVG string.
+ * @param {Uint8Array} rgba
+ * @param {number} width
+ * @param {number} height
+ * @param {object} [options]
+ * @returns {string}
+ */
+function convertPixels(rgba, width, height, options = {}) {
+  return wasm.vectorize_rgba(rgba, width, height, options);
+}
+
+/**
+ * Read an image file, vectorize it, and write the SVG to disk.
+ * @returns {Promise<void>}
+ */
+async function convertFile(inputPath, outputPath, options = {}) {
+  const data = await fsp.readFile(inputPath);
+  const svg = wasm.vectorize_bytes(data, options);
+  await fsp.writeFile(outputPath, svg);
+}
+
+/** Synchronous {@link convertFile}. */
+function convertFileSync(inputPath, outputPath, options = {}) {
+  const data = fs.readFileSync(inputPath);
+  const svg = wasm.vectorize_bytes(data, options);
+  fs.writeFileSync(outputPath, svg);
+}
+
+module.exports = { convertBuffer, convertPixels, convertFile, convertFileSync };