Import files with .ts extensions (#1059)

We have at least one passionate user (because they contributed!) using Bun,
so there's probably others. Bun and Deno can run .ts files directly - but
if we confuse them with import paths that don't resolve until after a transpile
step, they can break.

This PR ensures all files are imported as .ts files and then rewritten at build time
for compatibility with non-TypeScript runtimes.

Author: EzraBrooks

eslint.config.ts

@@ -4,6 +4,7 @@ import tseslint from "typescript-eslint";
 import globals from "globals";
 import jsdoc from "eslint-plugin-jsdoc";
 import prettier from "eslint-plugin-prettier";
+import importPlugin from "eslint-plugin-import";
 
 export default defineConfig(
   eslint.configs.recommended,
@@ -22,6 +23,7 @@ export default defineConfig(
     },
     plugins: {
       prettier,
+      import: importPlugin,
     },
     rules: {
       "prettier/prettier": [2, { endOfLine: "auto" }],
@@ -39,6 +41,7 @@ export default defineConfig(
             "Prefer arrow functions over invoking Function.prototype.bind",
         },
       ],
+      "import/extensions": 2,
     },
   },
   {

examples/node_simple.ts

@@ -1,7 +1,7 @@
 #!/usr/bin/env node
 
 // Connecting to ROS
-import * as ROSLIB from "../src/RosLib";
+import * as ROSLIB from "../src/RosLib.ts";
 
 const ros = new ROSLIB.Ros({
   url: "ws://localhost:9090",