fix(md-aggregate): use esbuild

packages/md-aggregate/esbuild.mjs

@@ -0,0 +1,20 @@
+import esbuild from "esbuild";
+await Promise.all([
+  esbuild.build({
+    entryPoints: ["src/index.ts", "src/cli.ts"],
+    platform: "node",
+    minify: true,
+    sourcemap: true,
+    outdir: "lib/esm",
+    format: "esm",
+  }),
+  esbuild.build({
+    entryPoints: ["src/index.ts", "src/cli.ts"],
+    platform: "node",
+    minify: true,
+    sourcemap: true,
+    outdir: "lib/cjs",
+    format: "cjs",
+    outExtension: { ".js": ".cjs" },
+  }),
+]);

packages/md-aggregate/package.json

@@ -19,11 +19,13 @@
   "author": "snomiao <snomiao@gmail.com>",
   "bin": "cli.mjs",
   "scripts": {
-    "postversion": "prettier -w CHANGELOG.md && md-aggregate CHANGELOG.md README.md -w"
+    "postversion": "prettier -w CHANGELOG.md && md-aggregate CHANGELOG.md README.md -w",
+    "build": "tsc && node esbuild.mjs"
   },
   "dependencies": {
     "arg": "^5.0.1",
-    "escape-string-regexp": "^5.0.0"
+    "escape-string-regexp": "^5.0.0",
+    "yargs": "^17.5.1"
   },
   "publishConfig": {
     "access": "public"

packages/md-aggregate/src/cli.ts

@@ -0,0 +1,21 @@
+#!/usr/bin/env node
+
+import yargs from "yargs";
+import { hideBin } from "yargs/helpers";
+import mdAggregate from ".";
+
+const argv = await yargs(hideBin(process.argv))
+  .usage("md-aggregate [...src.md] dst.md [-w]")
+  .example("one", "md-aggregate CHANGELOG.md README.md -w")
+  .example("multi", "md-aggregate LICENSE.md CHANGELOG.md README.md -w")
+  .boolean("write")
+  .alias("w", "write")
+  .describe("w", "write mode (when missing you will get preview in console)")
+  .demand(2)
+  .help()
+  .alias("h", "help")
+  .version()
+  .alias("v", "version").argv;
+
+const [dstPath, ...srcs] = argv._.reverse();
+await mdAggregate(String(dstPath), srcs.map(String), argv);

packages/md-aggregate/src/index.ts

@@ -0,0 +1,46 @@
+import escapeStringRegexp from "escape-string-regexp";
+import { readFile, writeFile } from "fs/promises";
+import { resolve } from "path";
+
+export default async function mdAggregate(
+  dstPath: string,
+  srcs: string[],
+  argv: { write: boolean },
+) {
+  let dstContent = await readFile(resolve(dstPath), "utf8");
+  await Promise.all(srcs.map(srcProcess));
+  if (argv.write) {
+    await writeFile(resolve(dstPath), dstContent);
+    console.log(resolve(dstPath));
+  } else {
+    console.log(dstContent);
+  }
+  return;
+  async function srcProcess(src) {
+    const srcContent = await readFile(resolve(src), "utf8");
+    if (!srcContent.match(/^# /)) throw new Error("srcContent must start with '# '");
+    const lines = srcContent
+      .trim()
+      .split("\n")
+      .map((e) => e.replace(/^#/gim, "##"));
+
+    // TODO: handle \r\n
+    const matchStartPattern = `\n${escapeStringRegexp(lines[0])}$`;
+    const eofPattern = "$(?![\\r\\n])";
+
+    const sectionStartPattern = `\n##? `;
+
+    const startPattern = `${matchStartPattern}|${eofPattern}`;
+    const anyPattern = `[\\s\\S]*?`;
+    const endPattern = `${eofPattern}|${sectionStartPattern}`;
+
+    const srcContentWithoutSectionStart = lines
+      .join("\n")
+      .replace(new RegExp(sectionStartPattern, "img"), "\n### ");
+
+    dstContent = dstContent.replace(
+      new RegExp(`(${startPattern})${anyPattern}(?=${endPattern})`, "m"),
+      `\n${srcContentWithoutSectionStart}\n`,
+    );
+  }
+}