diff --git a/package-lock.json b/package-lock.json
index 780bf68..f15c651 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4484,7 +4484,11 @@
 			"version": "0.0.0",
 			"license": "MIT",
 			"devDependencies": {
-				"@observablehq/runtime": "^5.8.2"
+				"@observablehq/inspector": "^5.0.0",
+				"@observablehq/runtime": "^5.8.2",
+				"@observablehq/stdlib": "^5.7.7",
+				"@wandering-app/types-observablehq_inspector": "file:../observablehq_inspector",
+				"@wandering-app/types-observablehq_stdlib": "file:../observablehq_stdlib"
 			}
 		},
 		"packages/observablehq_stdlib": {
@@ -5426,7 +5430,11 @@
 		"@wandering-app/types-observablehq_runtime": {
 			"version": "file:packages/observablehq_runtime",
 			"requires": {
-				"@observablehq/runtime": "^5.8.2"
+				"@observablehq/inspector": "*",
+				"@observablehq/runtime": "^5.8.2",
+				"@observablehq/stdlib": "^5.7.7",
+				"@wandering-app/types-observablehq_inspector": "file:../observablehq_inspector",
+				"@wandering-app/types-observablehq_stdlib": "file:../observablehq_stdlib"
 			}
 		},
 		"@wandering-app/types-observablehq_stdlib": {
diff --git a/packages/observablehq_inspector/tsconfig.json b/packages/observablehq_inspector/tsconfig.json
new file mode 100644
index 0000000..71e6b79
--- /dev/null
+++ b/packages/observablehq_inspector/tsconfig.json
@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6",
+            "dom"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts"
+    ]
+}
diff --git a/packages/observablehq_runtime/index.d.ts b/packages/observablehq_runtime/index.d.ts
index 286088a..4ec9e19 100644
--- a/packages/observablehq_runtime/index.d.ts
+++ b/packages/observablehq_runtime/index.d.ts
@@ -1,4 +1,9 @@
 declare module '@observablehq/runtime' {
+	import '@wandering-app/types-observablehq_inspector';
+	import '@wandering-app/types-observablehq_stdlib';
+	import '@observablehq/inspector';
+	import { FileAttachments } from '@observablehq/stdlib';
+
 	export { Inspector } from '@observablehq/inspector';
 
 	export class Module {
@@ -8,7 +13,7 @@ declare module '@observablehq/runtime' {
 	export class Runtime {
 		dispose(): void;
 		module<T, U>(v1: T, v2: U): Module;
-		fileAttachments: FileAttachments;
+		fileAttachments: typeof FileAttachments;
 	}
 
 	export interface Observer {
@@ -18,8 +23,8 @@ declare module '@observablehq/runtime' {
 	}
 
 	export namespace array {
-		export const map = Array.prototype.map;
-		export const forEach = Array.prototype.forEach;
+		export const map: typeof Array.prototype.map;
+		export const forEach: typeof Array.prototype.forEach;
 	}
 
 	export namespace constant {
diff --git a/packages/observablehq_runtime/package.json b/packages/observablehq_runtime/package.json
index dddb4f0..8f42fc5 100644
--- a/packages/observablehq_runtime/package.json
+++ b/packages/observablehq_runtime/package.json
@@ -25,6 +25,10 @@
 		"directory": "packages/observablehq_runtime"
 	},
 	"devDependencies": {
-		"@observablehq/runtime": "^5.8.2"
+		"@observablehq/inspector": "^5.0.0",
+		"@observablehq/runtime": "^5.8.2",
+		"@observablehq/stdlib": "^5.7.7",
+		"@wandering-app/types-observablehq_inspector": "file:../observablehq_inspector",
+		"@wandering-app/types-observablehq_stdlib": "file:../observablehq_stdlib"
 	}
 }
diff --git a/packages/observablehq_runtime/tsconfig.json b/packages/observablehq_runtime/tsconfig.json
new file mode 100644
index 0000000..71e6b79
--- /dev/null
+++ b/packages/observablehq_runtime/tsconfig.json
@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6",
+            "dom"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts"
+    ]
+}
diff --git a/packages/observablehq_stdlib/index.d.ts b/packages/observablehq_stdlib/index.d.ts
index 31bdcd1..1d5ae1d 100644
--- a/packages/observablehq_stdlib/index.d.ts
+++ b/packages/observablehq_stdlib/index.d.ts
@@ -148,28 +148,6 @@ declare module '@observablehq/stdlib' {
 	// table.js
 	export function coerceToType<T, U>(value: T, type: string): U;
 
-	/* eslint-disable @typescript-eslint/no-unused-vars */
-	export function coerceToType<T, string>(value: T, type = 'string'): string;
-	export function coerceToType<T, boolean>(value: T, type = 'boolean'): boolean;
-	export function coerceToType<T, bigint>(value: T, type = 'bigint'): bigint;
-	export function coerceToType<T, number>(value: T, type = 'integer'|'number'): number;
-	export function coerceToType<T, Date>(value: T, type = 'date'): Date;
-	export function coerceToType<T, Array>(value: T, type = 'array'): Array;
-	export function coerceToType<T, T>(value: T, type = 'object'|'value'): T;
-	export function coerceToType<T, ArrayBuffer>(value: T, type = 'buffer'): ArrayBuffer;
-	export function getTypeValidator<T>(colType: string): (value: any) => T;
-	export function getTypeValidator(colType = 'string'): (value: any) => value is string;
-	export function getTypeValidator(colType = 'boolean'): (value: any) => value is boolean;
-	export function getTypeValidator(colType = 'bigint'): (value: any) => value is bigint;
-	export function getTypeValidator(colType = 'number'): (value: any) => value is number;
-	export function getTypeValidator(colType = 'integer'): (value: any) => boolean;
-	export function getTypeValidator(colType = 'date'): (value: any) => value is Date;
-	export function getTypeValidator(colType = 'buffer'): (value: any) => value is ArrayBuffer;
-	export function getTypeValidator(colType = 'array'): (value: any) => value is Array;
-	/* eslint-enable @typescript-eslint/no-unused-vars */
-
-	export function getTypeValidator(colType = 'object'): (value: any) => value is Object; // eslint-disable-line @typescript-eslint/ban-types
-
 	export type DataSource = 'chart'|'table'|'sql';
 	export function loadDataSource(source: any, mode: DataSource, name: string);