From a85439df2580778e968307741e4e1af92a36ccd2 Mon Sep 17 00:00:00 2001
From: EGOIST <hi@egoist.dev>
Date: Sun, 12 Feb 2023 21:00:05 +0800
Subject: [PATCH] fix(types): make sure enum starts with `declare` keyword

closes #834
---
 pnpm-lock.yaml | 14 +-------------
 src/rollup.ts  | 10 ++++++++++
 2 files changed, 11 insertions(+), 13 deletions(-)

diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 550d790d..885d68e5 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -56,6 +56,7 @@ dependencies:
   rollup: 3.8.1
   source-map: 0.8.0-beta.0
   sucrase: 3.20.3
+  terser: 5.16.0
   tree-kill: 1.2.2
 
 devDependencies:
@@ -78,7 +79,6 @@ devDependencies:
   rollup-plugin-hashbang: 2.2.2
   strip-json-comments: 4.0.0
   svelte: 3.46.4
-  terser: 5.16.0
   ts-essentials: 9.1.2_typescript@4.9.5
   tsconfig-paths: 3.12.0
   tsup: 6.4.0_6lvfsmbcnhcbdgoh5cbwnen6ty
@@ -336,35 +336,29 @@ packages:
       '@jridgewell/set-array': 1.1.2
       '@jridgewell/sourcemap-codec': 1.4.14
       '@jridgewell/trace-mapping': 0.3.17
-    dev: true
 
   /@jridgewell/resolve-uri/3.1.0:
     resolution: {integrity: sha512-F2msla3tad+Mfht5cJq7LSXcdudKTWCVYUgw6pLFOOHSTtZlj6SWNYAp+AhuqLmWdBO2X5hPrLcu8cVP8fy28w==}
     engines: {node: '>=6.0.0'}
-    dev: true
 
   /@jridgewell/set-array/1.1.2:
     resolution: {integrity: sha512-xnkseuNADM0gt2bs+BvhO0p78Mk762YnZdsuzFV018NoG1Sj1SCQvpSqa7XUaTam5vAGasABV9qXASMKnFMwMw==}
     engines: {node: '>=6.0.0'}
-    dev: true
 
   /@jridgewell/source-map/0.3.2:
     resolution: {integrity: sha512-m7O9o2uR8k2ObDysZYzdfhb08VuEml5oWGiosa1VdaPZ/A6QyPkAJuwN0Q1lhULOf6B7MtQmHENS743hWtCrgw==}
     dependencies:
       '@jridgewell/gen-mapping': 0.3.2
       '@jridgewell/trace-mapping': 0.3.17
-    dev: true
 
   /@jridgewell/sourcemap-codec/1.4.14:
     resolution: {integrity: sha512-XPSJHWmi394fuUuzDnGz1wiKqWfo1yXecHQMRf2l6hztTO+nPru658AyDngaBe7isIxEkRsPR3FZh+s7iVa4Uw==}
-    dev: true
 
   /@jridgewell/trace-mapping/0.3.17:
     resolution: {integrity: sha512-MCNzAp77qzKca9+W/+I0+sEpaUnZoeasnghNeVc41VZCEKaCH73Vq3BZZ/SzWIgrqE4H4ceI+p+b6C0mHf9T4g==}
     dependencies:
       '@jridgewell/resolve-uri': 3.1.0
       '@jridgewell/sourcemap-codec': 1.4.14
-    dev: true
 
   /@nodelib/fs.scandir/2.1.5:
     resolution: {integrity: sha512-vq24Bq3ym5HEQm2NKCr3yXDwjc7vTsEThRDnkp2DK9p1uqLR+DHurm/NOTo0KG7HYHU7eppKZj3MyqYuMBf62g==}
@@ -641,7 +635,6 @@ packages:
     resolution: {integrity: sha512-7zFpHzhnqYKrkYdUjF1HI1bzd0VygEGX8lFk4k5zVMqHEoES+P+7TKI+EvLO9WVMJ8eekdO0aDEK044xTXwPPA==}
     engines: {node: '>=0.4.0'}
     hasBin: true
-    dev: true
 
   /acorn/8.8.2:
     resolution: {integrity: sha512-xjIYgE8HBrkpd/sJqOGNspf8uHG+NOHGOw6a/Urj8taM2EXfdNAH2oFcPeIFfsv3+kz/mJrS5VuMqbNLjCa2vw==}
@@ -716,7 +709,6 @@ packages:
 
   /buffer-from/1.1.2:
     resolution: {integrity: sha512-E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ==}
-    dev: true
 
   /bundle-require/3.1.2_esbuild@0.15.18:
     resolution: {integrity: sha512-Of6l6JBAxiyQ5axFxUM6dYeP/W7X2Sozeo/4EYB9sJhL+dqL7TKjg+shwxp6jlu/6ZSERfsYtIpSJ1/x3XkAEA==}
@@ -814,7 +806,6 @@ packages:
 
   /commander/2.20.3:
     resolution: {integrity: sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==}
-    dev: true
 
   /commander/4.1.1:
     resolution: {integrity: sha512-NOKm8xhkzAjzFx8B2v5OAHT+u5pRQc2UCa2Vq9jYL/31o2wi9mxBA7LIFs3sV5VSC49z6pEhfbMULvShKj26WA==}
@@ -1930,12 +1921,10 @@ packages:
     dependencies:
       buffer-from: 1.1.2
       source-map: 0.6.1
-    dev: true
 
   /source-map/0.6.1:
     resolution: {integrity: sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==}
     engines: {node: '>=0.10.0'}
-    dev: true
 
   /source-map/0.8.0-beta.0:
     resolution: {integrity: sha512-2ymg6oRBpebeZi9UUNsgQ89bhx01TcTkmNTGnNO88imTmbSgy4nfujrgVEFKWpMTEGA11EDkTt7mqObTPdigIA==}
@@ -2031,7 +2020,6 @@ packages:
       acorn: 8.8.1
       commander: 2.20.3
       source-map-support: 0.5.21
-    dev: true
 
   /thenify-all/1.6.0:
     resolution: {integrity: sha1-GhkY1ALY/D+Y+/I02wvMjMEOlyY=}
diff --git a/src/rollup.ts b/src/rollup.ts
index 28e17504..d7e68504 100644
--- a/src/rollup.ts
+++ b/src/rollup.ts
@@ -131,6 +131,15 @@ const getRollupConfig = async (
     },
   }
 
+  const fixEnumDeclaration: Plugin = {
+    name: 'tsup:fix-enum-declaration',
+    renderChunk(code) {
+      // make sure enum declaration starts with `declare`
+      // #834
+      return code.replace(/^(\s*)enum\s/gm, '$1declare enum ')
+    },
+  }
+
   return {
     inputConfig: {
       input: dtsOptions.entry,
@@ -171,6 +180,7 @@ const getRollupConfig = async (
             target: ts.ScriptTarget.ESNext,
           },
         }),
+        fixEnumDeclaration,
       ].filter(Boolean),
       external: [
         // Exclude dependencies, e.g. `lodash`, `lodash/get`