refactor(ts): enforce typing

src/cli.ts

@@ -1,7 +1,7 @@
 import { fetchOptionsFrom } from './config';
 import { doit } from './wrapper';
 
-export async function cli(args: string[]) {
+export async function cli(args: string[]):Promise<void> {
     const { jobTag, options } = await fetchOptionsFrom(args);
     await doit(jobTag, options);
 }

src/index.ts

@@ -15,4 +15,4 @@ import { argv } from 'process';
 
 import { cli } from './cli';
 
-cli(argv);
+void cli(argv);

src/wrapper.ts

@@ -2,11 +2,15 @@ import { join } from 'path';
 
 const tasksSubDir = 'tasks';
 
-export async function doit (jobTag: string, options: {} ) {
-
+async function loadModule(jobTag: string) {
     // dynamic import is fine here as `jobTag` validity has been checked already
     const modulePath = join(__dirname, tasksSubDir, jobTag);
-    const module = await import(modulePath);
+    const module: { job: (options: Record<string, unknown>) => Promise<void> } = await import(modulePath);
+    return module;
+}
+
 
-    module.job(options);
+export async function doit (jobTag: string, options: Record<string, unknown>): Promise<void> {
+    const { job } = await loadModule(jobTag);
+    await job(options);
 }