diff --git a/extensions/markdown/js/package.json b/extensions/markdown/js/package.json
index 47aec8a96..0e1581da1 100644
--- a/extensions/markdown/js/package.json
+++ b/extensions/markdown/js/package.json
@@ -16,6 +16,7 @@
   "packageManager": "yarn@3.1.1",
   "devDependencies": {
     "@flarum/prettier-config": "^1.0.0",
+    "flarum-tsconfig": "^1.0.2",
     "prettier": "^2.5.1"
   }
 }
diff --git a/extensions/markdown/js/tsconfig.json b/extensions/markdown/js/tsconfig.json
new file mode 100644
index 000000000..207c5b382
--- /dev/null
+++ b/extensions/markdown/js/tsconfig.json
@@ -0,0 +1,16 @@
+{
+  // Use Flarum's tsconfig as a starting point
+  "extends": "flarum-tsconfig",
+  // This will match all .ts, .tsx, .d.ts, .js, .jsx files in your `src` folder
+  // and also tells your Typescript server to read core's global typings for
+  // access to `dayjs` and `$` in the global namespace.
+  "include": ["src/**/*", "../vendor/flarum/core/js/dist-typings/@types/**/*"],
+  "compilerOptions": {
+    // This will output typings to `dist-typings`
+    "declarationDir": "./dist-typings",
+    "baseUrl": ".",
+    "paths": {
+      "flarum/*": ["../vendor/flarum/core/js/dist-typings/*"]
+    }
+  }
+}
diff --git a/extensions/markdown/js/yarn.lock b/extensions/markdown/js/yarn.lock
index 9cde2a8ad..9af58f070 100644
--- a/extensions/markdown/js/yarn.lock
+++ b/extensions/markdown/js/yarn.lock
@@ -1382,6 +1382,7 @@ __metadata:
   resolution: "@flarum/markdown@workspace:."
   dependencies:
     "@flarum/prettier-config": ^1.0.0
+    flarum-tsconfig: ^1.0.2
     flarum-webpack-config: ^1.0.0
     prettier: ^2.5.1
     webpack: ^4.46.0
@@ -1437,6 +1438,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/jquery@npm:^3.5.5":
+  version: 3.5.11
+  resolution: "@types/jquery@npm:3.5.11"
+  dependencies:
+    "@types/sizzle": "*"
+  checksum: bad7c4495ade39e712462af534169790115d07874bb1a8c43a597676bd4e4d62caaf961353836f1e9f67309cac3a224b8743da07bad4cb2ff853b93f1856014b
+  languageName: node
+  linkType: hard
+
 "@types/json-schema@npm:^7.0.5":
   version: 7.0.9
   resolution: "@types/json-schema@npm:7.0.9"
@@ -1444,6 +1454,27 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/mithril@npm:^2.0.7":
+  version: 2.0.8
+  resolution: "@types/mithril@npm:2.0.8"
+  checksum: 53d10bacd004b8028884a2e5a908ce32fd54da5247e47afd8aec0edff01fd56cc239fd72d0487d406d328363dc55adcefcd430088584e68622c2623708c94cbd
+  languageName: node
+  linkType: hard
+
+"@types/sizzle@npm:*":
+  version: 2.3.3
+  resolution: "@types/sizzle@npm:2.3.3"
+  checksum: 586a9fb1f6ff3e325e0f2cc1596a460615f0bc8a28f6e276ac9b509401039dd242fa8b34496d3a30c52f5b495873922d09a9e76c50c2ab2bcc70ba3fb9c4e160
+  languageName: node
+  linkType: hard
+
+"@types/throttle-debounce@npm:^2.1.0":
+  version: 2.1.0
+  resolution: "@types/throttle-debounce@npm:2.1.0"
+  checksum: 70e219d000595108fce0dc624c8296e37cdb174b528e09c939da18e619da1c6df86b088659f5eb93cb146bd5fe2954597823c2e1f0849dc8f6585d87cbbf71b7
+  languageName: node
+  linkType: hard
+
 "@webassemblyjs/ast@npm:1.9.0":
   version: 1.9.0
   resolution: "@webassemblyjs/ast@npm:1.9.0"
@@ -2664,6 +2695,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"dayjs@npm:^1.10.4":
+  version: 1.10.7
+  resolution: "dayjs@npm:1.10.7"
+  checksum: a0a4ca95abaa03d0702161dc2c35d16121188e342f5052b9c61cdf784dab68af766f477c04f87f71c6af666fd4d13db9b9853b87265850d6093b7b04e1bb1cd7
+  languageName: node
+  linkType: hard
+
 "debug@npm:4, debug@npm:^4.1.0, debug@npm:^4.1.1, debug@npm:^4.3.1":
   version: 4.3.3
   resolution: "debug@npm:4.3.3"
@@ -3125,6 +3163,18 @@ __metadata:
   languageName: node
   linkType: hard
 
+"flarum-tsconfig@npm:^1.0.2":
+  version: 1.0.2
+  resolution: "flarum-tsconfig@npm:1.0.2"
+  dependencies:
+    "@types/jquery": ^3.5.5
+    "@types/mithril": ^2.0.7
+    "@types/throttle-debounce": ^2.1.0
+    dayjs: ^1.10.4
+  checksum: 65a59571ac042b442effc96d979c73365da153c34c489c698b2974a2d9fea877a8acf4030dad6becc0ecaecb6b296f598db2e9badd33a9f31eee6245d0301e92
+  languageName: node
+  linkType: hard
+
 "flarum-webpack-config@npm:^1.0.0":
   version: 1.0.0
   resolution: "flarum-webpack-config@npm:1.0.0"