diff --git a/libs/jast/jast/src/lib/names.ts b/libs/jast/jast/src/lib/names.ts
index db3763b5..536ca511 100755
--- a/libs/jast/jast/src/lib/names.ts
+++ b/libs/jast/jast/src/lib/names.ts
@@ -312,4 +312,6 @@ export const names = [
   'year',
 ]
 
-function ignore() {}
+function ignore() {
+  //
+}
diff --git a/libs/jast/jast/src/lib/rejour.ts b/libs/jast/jast/src/lib/rejour.ts
index 902d7312..52f49006 100755
--- a/libs/jast/jast/src/lib/rejour.ts
+++ b/libs/jast/jast/src/lib/rejour.ts
@@ -33,7 +33,7 @@ export interface Element extends UnistNode {
 }
 
 export function isElement(node: UnistNode): node is Element {
-  return node.hasOwnProperty('name') && node.hasOwnProperty('attributes')
+  return 'name' in node && 'attributes' in node
 }
 
 export function isParagraphContent(node: UnistNode): node is P['children'][number] {
diff --git a/libs/rejour/rejour-parse/src/lib/rejour-parse.spec.ts b/libs/rejour/rejour-parse/src/lib/rejour-parse.spec.ts
index c1fc3518..27d46cd5 100755
--- a/libs/rejour/rejour-parse/src/lib/rejour-parse.spec.ts
+++ b/libs/rejour/rejour-parse/src/lib/rejour-parse.spec.ts
@@ -1,5 +1,5 @@
 import { unified } from 'unified'
-import rejourParse from './rejour-parse'
+import rejourParse from './rejour-parse.js'
 import { removePosition } from 'unist-util-remove-position'
 
 describe('parser', () => {
@@ -26,7 +26,7 @@ describe('parser', () => {
 
 
     </article>`),
-      true
+      true,
     )
     console.dir(tree, { depth: null })
     expect(tree).toEqual({
@@ -48,7 +48,7 @@ describe('parser', () => {
 
 
     </article>`),
-      true
+      true,
     )
     console.dir(tree, { depth: null })
     expect(tree).toEqual({
diff --git a/libs/texast/texast-util-to-latex/src/lib/configure.ts b/libs/texast/texast-util-to-latex/src/lib/configure.ts
index cf5222a1..56b7b111 100755
--- a/libs/texast/texast-util-to-latex/src/lib/configure.ts
+++ b/libs/texast/texast-util-to-latex/src/lib/configure.ts
@@ -1,4 +1,4 @@
-import { Options, Context } from './types'
+import { Options, Context } from './types.js'
 
 export function configure(base: Context, extension: Options): Context {
   let index = -1
diff --git a/libs/texast/texast-util-to-latex/src/lib/handle/alignment-tab.ts b/libs/texast/texast-util-to-latex/src/lib/handle/alignment-tab.ts
index c765dd8e..4505bfd9 100755
--- a/libs/texast/texast-util-to-latex/src/lib/handle/alignment-tab.ts
+++ b/libs/texast/texast-util-to-latex/src/lib/handle/alignment-tab.ts
@@ -1,9 +1,6 @@
 import { AlignmentTab } from 'texast'
-import { BasicHandle, Options } from '../types'
+import { BasicHandle, Options } from '../types.js'
 
-export const alignmentTab: BasicHandle = (
-  node: AlignmentTab,
-  options: Options = {}
-) => {
+export const alignmentTab: BasicHandle = (node: AlignmentTab, options: Options = {}) => {
   return ' & '
 }
diff --git a/libs/texast/texast-util-to-latex/src/lib/texast-util-to-latex.ts b/libs/texast/texast-util-to-latex/src/lib/texast-util-to-latex.ts
index b67ca946..58e09c99 100755
--- a/libs/texast/texast-util-to-latex/src/lib/texast-util-to-latex.ts
+++ b/libs/texast/texast-util-to-latex/src/lib/texast-util-to-latex.ts
@@ -1,7 +1,5 @@
-import { handle } from './handle'
-import { zwitch } from 'zwitch'
-import { configure } from './configure'
-import { Options, Context, Node, Handle, Join, Unsafe } from './types'
+import { handle } from './handle/index.js'
+import { Options, Node } from './types.js'
 import { isKnownNode } from 'texast'
 
 const invalid = (value: unknown) => {
@@ -11,11 +9,7 @@ const unknown = (node: Node) => {
   throw new Error(`Unknown type ${node.type}, skipping...`)
 }
 
-const handleNodeProperly = (
-  type: string,
-  node: Node,
-  options: Options = {}
-) => {
+const handleNodeProperly = (type: string, node: Node, options: Options = {}) => {
   // @ts-expect-error No it's fine we can throw everything into it
   const handleFunction = handle?.[type]
 
diff --git a/libs/texast/texast-util-to-latex/src/lib/util/safe.ts b/libs/texast/texast-util-to-latex/src/lib/util/safe.ts
index b09ab010..6f65b02b 100755
--- a/libs/texast/texast-util-to-latex/src/lib/util/safe.ts
+++ b/libs/texast/texast-util-to-latex/src/lib/util/safe.ts
@@ -1,4 +1,4 @@
-import { Context, SafeOptions } from '../types'
+import { Context, SafeOptions } from '../types.js'
 
 /**
  * @param {Context} context
@@ -9,7 +9,7 @@ import { Context, SafeOptions } from '../types'
 export function safe(
   context: Context,
   input: string | null | undefined,
-  config: SafeOptions & { encode?: Array<string> }
+  config: SafeOptions & { encode?: Array<string> },
 ): string {
   return input || ''
 }