From 5adbc554eae4bafa60e1b260b9f565f27c7603cf Mon Sep 17 00:00:00 2001
From: Jamie White <jameswhite@salesforce.com>
Date: Mon, 3 Aug 2020 14:00:54 +0200
Subject: [PATCH] fix(hooks): match type of Config.runHook to IConfig.runHook

---
 src/config.ts           | 2 +-
 test/typescript.test.ts | 3 +--
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/config.ts b/src/config.ts
index 6d6f957f..033eafa4 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -304,7 +304,7 @@ export class Config implements IConfig {
     }
   }
 
-  async runHook<T>(event: string, opts: T) {
+  async runHook<T extends Hooks, K extends Extract<keyof T, string>>(event: K, opts: T[K]): Promise<void> {
     debug('start %s hook', event)
     const promises = this.plugins.map(p => {
       const debug = require('debug')([this.bin, p.name, 'hooks', event].join(':'))
diff --git a/test/typescript.test.ts b/test/typescript.test.ts
index 42883e7a..7da8eff3 100644
--- a/test/typescript.test.ts
+++ b/test/typescript.test.ts
@@ -46,8 +46,7 @@ describe('typescript', () => {
   withConfig
   .stdout()
   .it('runs init hook', async ctx => {
-    // to-do: fix union types
-    await (ctx.config.runHook as any)('init', {id: 'myid', argv: ['foo']})
+    await (ctx.config.runHook)('init', {id: 'myid', argv: ['foo']})
     expect(ctx.stdout).to.equal('running ts init hook\n')
   })
 })