0.2.0 - Mid migration

web/node_modules/@babel/helpers/scripts/generate-helpers.js

@@ -0,0 +1,63 @@
+import fs from "fs";
+import { join } from "path";
+import { URL, fileURLToPath } from "url";
+
+const HELPERS_FOLDER = new URL("../src/helpers", import.meta.url);
+const IGNORED_FILES = new Set(["package.json"]);
+
+export default async function generateAsserts() {
+  let output = `/*
+ * This file is auto-generated! Do not modify it directly.
+ * To re-generate run 'make build'
+ */
+
+import template from "@babel/template";
+
+`;
+
+  for (const file of (await fs.promises.readdir(HELPERS_FOLDER)).sort()) {
+    if (IGNORED_FILES.has(file)) continue;
+    if (file.startsWith(".")) continue; // ignore e.g. vim swap files
+
+    const [helperName] = file.split(".");
+    const isValidId = isValidBindingIdentifier(helperName);
+    const varName = isValidId ? helperName : `_${helperName}`;
+
+    const filePath = join(fileURLToPath(HELPERS_FOLDER), file);
+    const fileContents = await fs.promises.readFile(filePath, "utf8");
+    const minVersionMatch = fileContents.match(
+      /^\s*\/\*\s*@minVersion\s+(?<minVersion>\S+)\s*\*\/\s*$/m
+    );
+    if (!minVersionMatch) {
+      throw new Error(`@minVersion number missing in ${filePath}`);
+    }
+    const { minVersion } = minVersionMatch.groups;
+
+    // TODO: We can minify the helpers in production
+    const source = fileContents
+      // Remove comments
+      .replace(/\/\*[^]*?\*\/|\/\/.*/g, "")
+      // Remove multiple newlines
+      .replace(/\n{2,}/g, "\n");
+
+    const intro = isValidId
+      ? "export "
+      : `export { ${varName} as ${helperName} }\n`;
+
+    output += `\n${intro}const ${varName} = {
+  minVersion: ${JSON.stringify(minVersion)},
+  ast: () => template.program.ast(${JSON.stringify(source)})
+};\n`;
+  }
+
+  return output;
+}
+
+function isValidBindingIdentifier(name) {
+  try {
+    Function(`var ${name}`);
+    return true;
+  } catch {
+    return false;
+  }
+}

web/node_modules/@babel/helpers/scripts/package.json

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+{ "type": "module" }