add term

static/term/pkg/axios/bin/pr.js

@@ -0,0 +1,75 @@
+import util from "util";
+import cp from "child_process";
+import Handlebars from "handlebars";
+import fs from "fs/promises";
+import prettyBytes from 'pretty-bytes';
+import {gzipSize} from 'gzip-size';
+
+const exec = util.promisify(cp.exec);
+
+const getBlobHistory = async (filepath, maxCount= 5) => {
+  const log = (await exec(
+    `git log --max-count=${maxCount} --no-walk --tags=v* --oneline --format=%H%d -- ${filepath}`
+  )).stdout;
+
+  const commits = [];
+
+  let match;
+
+  const regexp = /^(\w+) \(tag: (v?[.\d]+)\)$/gm;
+
+  while((match = regexp.exec(log))) {
+    commits.push({
+      sha: match[1],
+      tag: match[2],
+      size: await getBlobSize(filepath, match[1])
+    })
+  }
+
+  return commits;
+}
+
+const getBlobSize = async (filepath, sha ='HEAD') => {
+  const size = (await exec(
+    `git cat-file -s ${sha}:${filepath}`
+  )).stdout;
+
+  return size ? +size : 0;
+}
+
+const generateFileReport = async (files) => {
+  const stat = {};
+
+  for(const [name, file] of Object.entries(files)) {
+    const commits = await getBlobHistory(file);
+
+    stat[file] = {
+      name,
+      size: (await fs.stat(file)).size,
+      path: file,
+      gzip: await gzipSize(String(await fs.readFile(file))),
+      commits,
+      history: commits.map(({tag, size}) => `${prettyBytes(size)} (${tag})`).join(' ← ')
+    }
+  }
+
+  return stat;
+}
+
+const generateBody = async ({files, template = './templates/pr.hbs'} = {}) => {
+  const data = {
+    files: await generateFileReport(files)
+  };
+
+  Handlebars.registerHelper('filesize', (bytes)=> prettyBytes(bytes));
+
+  return Handlebars.compile(String(await fs.readFile(template)))(data);
+}
+
+console.log(await generateBody({
+  files: {
+    'Browser build (UMD)' : './dist/axios.min.js',
+    'Browser build (ESM)' : './dist/esm/axios.min.js',
+  }
+}));
+