diff --git a/.eslintrc.js b/.eslintrc.js
index 2023207f74..c8ec8d1d01 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -35,12 +35,7 @@ module.exports = {
 				argsIgnorePattern: '^_'
 			}
 		],
-		'@typescript-eslint/no-object-literal-type-assertion': [
-			'error',
-			{
-				allowAsParameter: true
-			}
-		],
+		'@typescript-eslint/no-object-literal-type-assertion': 'off',
 		'@typescript-eslint/no-unused-vars': 'off'
 	},
 	globals: {
diff --git a/package.json b/package.json
index 91723ee714..8584ac6ff8 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "coverage": "c8 report --reporter=text-lcov > coverage.lcov && c8 report --reporter=html",
     "codecov": "codecov",
     "precodecov": "npm run coverage",
-    "build": "rollup -c",
+    "build": "rollup -c && npm run tsd",
     "prepare": "npm run build",
     "dev": "rollup -cw",
     "pretest": "npm run build",
diff --git a/src/compiler/compile/nodes/shared/Expression.ts b/src/compiler/compile/nodes/shared/Expression.ts
index aa25b89771..1882c19267 100644
--- a/src/compiler/compile/nodes/shared/Expression.ts
+++ b/src/compiler/compile/nodes/shared/Expression.ts
@@ -9,7 +9,7 @@ import TemplateScope from './TemplateScope';
 import get_object from '../../utils/get_object';
 import Block from '../../render_dom/Block';
 import is_dynamic from '../../render_dom/wrappers/shared/is_dynamic';
-import { x, b } from 'code-red';
+import { b } from 'code-red';
 import { invalidate } from '../../render_dom/invalidate';
 import { Node, FunctionExpression, Identifier } from 'estree';
 import { TemplateNode } from '../../../interfaces';
diff --git a/src/compiler/compile/render_dom/Renderer.ts b/src/compiler/compile/render_dom/Renderer.ts
index 67e4640a51..672eb3217d 100644
--- a/src/compiler/compile/render_dom/Renderer.ts
+++ b/src/compiler/compile/render_dom/Renderer.ts
@@ -6,14 +6,14 @@ import { x } from 'code-red';
 import { Node, Identifier, MemberExpression, Literal } from 'estree';
 import flatten_reference from '../utils/flatten_reference';
 
-type ContextMember = {
+interface ContextMember {
 	name: string;
 	index: Literal;
 	is_contextual: boolean;
 	is_non_contextual: boolean;
 	variable: Var;
 	priority: number;
-};
+}
 
 export default class Renderer {
 	component: Component; // TODO Maybe Renderer shouldn't know about Component?
diff --git a/src/compiler/compile/render_dom/wrappers/EachBlock.ts b/src/compiler/compile/render_dom/wrappers/EachBlock.ts
index d1d55b1e5c..82e8e9abfd 100644
--- a/src/compiler/compile/render_dom/wrappers/EachBlock.ts
+++ b/src/compiler/compile/render_dom/wrappers/EachBlock.ts
@@ -205,7 +205,7 @@ export default class EachBlockWrapper extends Wrapper {
 
 		block.chunks.init.push(b`let ${this.vars.each_block_value} = ${snippet};`);
 
-		// TODO which is better — Object.create(array) or array.slice()?
+		// TODO which is better — Object.create(array) or array.slice()?
 		renderer.blocks.push(b`
 			function ${this.vars.get_each_context}(#ctx, list, i) {
 				const child_ctx = #ctx.slice();
diff --git a/src/compiler/compile/render_dom/wrappers/InlineComponent/index.ts b/src/compiler/compile/render_dom/wrappers/InlineComponent/index.ts
index 315b347ef6..e093ade56c 100644
--- a/src/compiler/compile/render_dom/wrappers/InlineComponent/index.ts
+++ b/src/compiler/compile/render_dom/wrappers/InlineComponent/index.ts
@@ -20,7 +20,7 @@ import { extract_names } from 'periscopic';
 
 export default class InlineComponentWrapper extends Wrapper {
 	var: Identifier;
-	slots: Map<string, { block: Block; scope: TemplateScope; get_context?: Node, get_changes?: Node }> = new Map();
+	slots: Map<string, { block: Block; scope: TemplateScope; get_context?: Node; get_changes?: Node }> = new Map();
 	node: InlineComponent;
 	fragment: FragmentWrapper;
 
diff --git a/src/compiler/compile/render_dom/wrappers/shared/get_slot_definition.ts b/src/compiler/compile/render_dom/wrappers/shared/get_slot_definition.ts
index 082ac6f841..24ca813684 100644
--- a/src/compiler/compile/render_dom/wrappers/shared/get_slot_definition.ts
+++ b/src/compiler/compile/render_dom/wrappers/shared/get_slot_definition.ts
@@ -35,7 +35,7 @@ export function get_slot_definition(block: Block, scope: TemplateScope, lets: Le
 			const literal = {
 				type: 'Literal',
 				get value() {
-					const i = context_lookup.get(name).index.value;
+					const i = context_lookup.get(name).index.value as number;
 					return 1 << i;
 				}
 			};
diff --git a/src/runtime/internal/Component.ts b/src/runtime/internal/Component.ts
index 9f9d43fd2d..09368a4a2b 100644
--- a/src/runtime/internal/Component.ts
+++ b/src/runtime/internal/Component.ts
@@ -1,6 +1,6 @@
 import { add_render_callback, flush, schedule_update, dirty_components } from './scheduler';
 import { current_component, set_current_component } from './lifecycle';
-import { blank_object, is_function, run, run_all, noop, has_prop } from './utils';
+import { blank_object, is_function, run, run_all, noop } from './utils';
 import { children } from './dom';
 import { transition_in } from './transitions';