Migrate from tsimp to swc (#555)

* Migrate from tsimp to swc using an import shim to mitigate the bn.js import bug

* Updating version to 3.1.27

* Try a shorter sleep

---------

Co-authored-by: dc-autobot[bot] <181364585+dc-autobot[bot]@users.noreply.github.com>

.depcheckrc

@@ -1,10 +1,10 @@
 ignores: [
+  '@swc/cli',
   'concurrently',
   'pino-colada',
   'nodemon',
   'multer',
   'pg',
-  '@digicatapult/tsimp',
   'ts-node',
   '@polkadot/util-crypto',
   '@polkadot/types',

.gitignore

@@ -6,7 +6,6 @@ src/swagger.json
 src/routes.ts
 dist
 coverage
-.tsimp
 
 .npm
 .env

.swcrc

@@ -0,0 +1,24 @@
+{
+  "$schema": "https://swc.rs/schema.json",
+  "jsc": {
+    "parser": {
+      "syntax": "typescript",
+      "tsx": false,
+      "decorators": true,
+      "dynamicImport": true,
+      "importMeta": true
+    },
+    "transform": {
+      "decoratorMetadata": true,
+      "legacyDecorator": true,
+      "useDefineForClassFields": true
+    },
+    "target": "es2022"
+  },
+  "exclude": [
+    "/__test__/"
+  ],
+  "sourceMaps": true,
+  "isModule": true,
+  "minify": false
+}

docker-compose-test.yml

@@ -27,7 +27,7 @@ services:
     image: digicatapult/sqnc-identity-service:latest
     container_name: identity-service
     command: /bin/sh -c "
-      sleep 30 &&
+      sleep 20 &&
       npm run db:migrate &&
       npm start"
     ports:

eslint.config.mjs

@@ -17,7 +17,7 @@ const compat = new FlatCompat({
 
 export default [
   {
-    ignores: ['**/node_modules', '**/package.json', '**/build', '**/.tsimp'],
+    ignores: ['**/node_modules', '**/package.json', '**/build'],
   },
   ...compat.extends('eslint:recommended', 'plugin:@typescript-eslint/recommended', 'prettier'),
   {

import/hooks.mjs

@@ -0,0 +1,11 @@
+import { resolve as swcResolve } from '@swc-node/register/esm'
+export { load } from '@swc-node/register/esm'
+
+const skipSwcSet = new Set(['bn.js'])
+
+export function resolve(specifier, context, nextResolve) {
+  if (skipSwcSet.has(specifier)) {
+    return nextResolve(specifier, context)
+  }
+  return swcResolve(specifier, context, nextResolve)
+}

import/index.mjs

@@ -0,0 +1,3 @@
+import { register } from 'node:module'
+
+register('./hooks.mjs', import.meta.url)

nodemon.json

@@ -1,5 +1,5 @@
 {
-  "exec": "node --import=@digicatapult/tsimp/import src/index.ts",
+  "exec": "node --import=./import/index.mjs src/index.ts",
   "watch": ["src"],
   "ext": "ts"
 }