feat: Initial clean release of CHM

packages/htmlpack/index.ts

@@ -0,0 +1,35 @@
+import * as fs from 'fs-extra';
+import Datauri = require('datauri/sync');
+import { dirname } from 'path';
+import packToWriter, { type FileApiChunkCallback } from './packToWriter';
+
+const dataUriEncode = (filePath: string): string => {
+	const result = Datauri(filePath);
+	return result.content;
+};
+
+export default async function htmlpack(inputFile: string, outputFile: string): Promise<void> {
+	const inputHtml = await fs.readFile(inputFile, 'utf8');
+	const baseDir = dirname(inputFile);
+
+	const chunks: string[] = [];
+	await packToWriter(baseDir, inputHtml, {
+		exists(path: string) {
+			return fs.exists(path);
+		},
+		readFileText(path: string) {
+			return fs.readFile(path, 'utf8');
+		},
+		async readFileDataUri(path: string) {
+			return dataUriEncode(path);
+		},
+		async streamFileDataUri(path: string, onChunk: FileApiChunkCallback) {
+			await onChunk(dataUriEncode(path));
+		},
+		writeChunk(chunk: string) {
+			chunks.push(chunk);
+		},
+	});
+
+	await fs.writeFile(outputFile, chunks.join(''), 'utf8');
+}