refactor: move out tool to own repo and utilize

package.json

@@ -39,6 +39,7 @@
   },
   "devDependencies": {
     "@es-joy/escodegen": "^3.5.1",
+    "@es-joy/js2ts-assistant": "^0.1.0",
     "@es-joy/jsdoc-eslint-parser": "^0.16.0",
     "@es-joy/jsdoccomment": "^0.29.0",
     "@rollup/plugin-commonjs": "^17.1.0",
@@ -82,7 +83,7 @@
     "pretest": "npm run build",
     "prepublishOnly": "npm run update-version && npm run build",
     "sync-docs": "node sync-docs.js",
-    "js-for-ts": "node tools/intermediate-js-for-ts.js",
+    "js-for-ts": "node tools/js-for-ts.js",
     "generate-release": "eslint-generate-release",
     "generate-alpharelease": "eslint-generate-prerelease alpha",
     "generate-betarelease": "eslint-generate-prerelease beta",

tools/js-for-ts.js

@@ -0,0 +1,62 @@
+import js2tsAssistant from "@es-joy/js2ts-assistant";
+
+await js2tsAssistant({
+    customClassHandling({
+        ast, builders, superClassName
+    }) {
+
+        // Since we're not tracking types as in using a
+        //  proper TS transformer (like `ttypescript`?),
+        //  we hack this one for now
+        if (superClassName === "Parser") {
+
+            // Make import available
+            ast.body.unshift(
+                builders.importDeclaration(
+                    [
+                        builders.importNamespaceSpecifier(
+                            builders.identifier("acorn")
+                        )
+                    ],
+                    builders.literal("acorn"),
+                    "value"
+                )
+            );
+            return "acorn.Parser";
+        }
+        return null;
+    },
+    customParamHandling({
+        tag, identifier, typeCast
+    }) {
+
+        // Hack in some needed type casts
+        if (tag.name === "opts") {
+            identifier.jsdoc = typeCast({
+                typeLines: [
+                    {
+                        type: "JsdocTypeLine",
+                        initial: "",
+                        delimiter: "",
+                        postDelimiter: "",
+                        rawType: "acorn.Options"
+                    }
+                ],
+                rawType: "acorn.Options"
+            });
+        } else if (tag.name === "code") {
+            identifier.jsdoc = typeCast({
+                typeLines: [
+                    {
+                        type: "JsdocTypeLine",
+                        initial: "",
+                        delimiter: "",
+                        postDelimiter: "",
+                        rawType: "string"
+                    }
+                ],
+                rawType: "string"
+            });
+        }
+    }
+});