diff --git a/README.md b/README.md
index bfee3c1..5acf45e 100644
--- a/README.md
+++ b/README.md
@@ -78,6 +78,10 @@ const data = await parquetReadObjects({
 })
 ```
 
+## Parquet Writing
+
+To create parquet files from javascript, check out the [hyparquet-writer](https://github.com/hyparam/hyparquet-writer) package.
+
 ## Advanced Usage
 
 ### Reading Metadata
@@ -180,10 +184,6 @@ await parquetRead({
 
 The `parquetReadObjects` function defaults to returning an array of objects.
 
-## Parquet Writing
-
-To create parquet files from javascript, check out the [hyparquet-writer](https://github.com/hyparam/hyparquet-writer) package.
-
 ## Supported Parquet Files
 
 The parquet format is known to be a sprawling format which includes options for a wide array of compression schemes, encoding types, and data structures.
diff --git a/src/types.d.ts b/src/types.d.ts
index f423fb7..60c8cee 100644
--- a/src/types.d.ts
+++ b/src/types.d.ts
@@ -1,4 +1,48 @@
-export type Awaitable<T> = T | Promise<T>
+/**
+ * Parquet query options for reading data
+ */
+export interface ParquetReadOptions {
+  file: AsyncBuffer // file-like object containing parquet data
+  metadata?: FileMetaData // parquet metadata, will be parsed if not provided
+  columns?: string[] // columns to read, all columns if undefined
+  rowFormat?: string // format of each row passed to the onComplete function
+  rowStart?: number // first requested row index (inclusive)
+  rowEnd?: number // last requested row index (exclusive)
+  onChunk?: (chunk: ColumnData) => void // called when a column chunk is parsed. chunks may contain data outside the requested range.
+  onComplete?: (rows: any[][]) => void // called when all requested rows and columns are parsed
+  compressors?: Compressors // custom decompressors
+  utf8?: boolean // decode byte arrays as utf8 strings (default true)
+}
+
+/**
+ * Parquet query options for filtering data
+ */
+export interface ParquetQueryFilter {
+  [key: string]: ParquetQueryValue | ParquetQueryOperator | ParquetQueryFilter[] | undefined
+  $and?: ParquetQueryFilter[]
+  $or?: ParquetQueryFilter[]
+  $not?: ParquetQueryFilter
+}
+export type ParquetQueryValue = string | number | boolean | object | null | undefined
+export type ParquetQueryOperator = {
+  $gt?: ParquetQueryValue
+  $gte?: ParquetQueryValue
+  $lt?: ParquetQueryValue
+  $lte?: ParquetQueryValue
+  $ne?: ParquetQueryValue
+  $in?: ParquetQueryValue[]
+  $nin?: ParquetQueryValue[]
+}
+
+/**
+ * A run of column data
+ */
+export interface ColumnData {
+  columnName: string
+  columnData: DecodedArray
+  rowStart: number
+  rowEnd: number
+}
 
 /**
  * File-like object that can read slices of a file asynchronously.
@@ -7,6 +51,7 @@ export interface AsyncBuffer {
   byteLength: number
   slice(start: number, end?: number): Awaitable<ArrayBuffer>
 }
+export type Awaitable<T> = T | Promise<T>
 
 export interface DataReader {
   view: DataView
@@ -329,50 +374,5 @@ export interface ColumnIndex {
 
 export type BoundaryOrder = 'UNORDERED' | 'ASCENDING' | 'DESCENDING'
 
-/**
- * A run of column data
- */
-export interface ColumnData {
-  columnName: string
-  columnData: ArrayLike<any>
-  rowStart: number
-  rowEnd: number
-}
-
-/**
- * Parquet query options for reading data
- */
-export interface ParquetReadOptions {
-  file: AsyncBuffer // file-like object containing parquet data
-  metadata?: FileMetaData // parquet metadata, will be parsed if not provided
-  columns?: string[] // columns to read, all columns if undefined
-  rowFormat?: string // format of each row passed to the onComplete function
-  rowStart?: number // first requested row index (inclusive)
-  rowEnd?: number // last requested row index (exclusive)
-  onChunk?: (chunk: ColumnData) => void // called when a column chunk is parsed. chunks may be outside the requested range.
-  onComplete?: (rows: any[][]) => void // called when all requested rows and columns are parsed
-  compressors?: Compressors // custom decompressors
-  utf8?: boolean // decode byte arrays as utf8 strings (default true)
-}
-
-export type ParquetQueryValue = string | number | boolean | object | null | undefined
-
-export type ParquetQueryOperator = {
-  $gt?: ParquetQueryValue
-  $gte?: ParquetQueryValue
-  $lt?: ParquetQueryValue
-  $lte?: ParquetQueryValue
-  $ne?: ParquetQueryValue
-  $in?: ParquetQueryValue[]
-  $nin?: ParquetQueryValue[]
-}
-
-export interface ParquetQueryFilter {
-  [key: string]: ParquetQueryValue | ParquetQueryOperator | ParquetQueryFilter[] | undefined
-  $and?: ParquetQueryFilter[]
-  $or?: ParquetQueryFilter[]
-  $not?: ParquetQueryFilter
-}
-
 export type ThriftObject = { [ key: `field_${number}` ]: ThriftType }
 export type ThriftType = boolean | number | bigint | Uint8Array | ThriftType[] | ThriftObject
diff --git a/test/column.test.js b/test/column.test.js
index 62967a4..b5bb3cd 100644
--- a/test/column.test.js
+++ b/test/column.test.js
@@ -1,4 +1,3 @@
-import { compressors } from 'hyparquet-compressors'
 import { describe, expect, it } from 'vitest'
 import { getColumnRange, readColumn } from '../src/column.js'
 import { parquetMetadata } from '../src/hyparquet.js'
@@ -14,8 +13,8 @@ describe('readColumn', () => {
     { rowGroupEnd: 0, expected: [] },
   ])('readColumn with rowGroupEnd %p', async ({ rowGroupEnd, expected }) => {
     const testFile = 'test/files/float16_nonzeros_and_nans.parquet'
-    const asyncBuffer = await asyncBufferFromFile(testFile)
-    const arrayBuffer = await asyncBuffer.slice(0)
+    const file = await asyncBufferFromFile(testFile)
+    const arrayBuffer = await file.slice(0)
     const metadata = parquetMetadata(arrayBuffer)
 
     const column = metadata.row_groups[0].columns[0]
@@ -25,14 +24,14 @@ describe('readColumn', () => {
     const schemaPath = getSchemaPath(metadata.schema, column.meta_data?.path_in_schema ?? [])
     const reader = { view: new DataView(columnArrayBuffer), offset: 0 }
 
-    const result = readColumn(reader, 0, rowGroupEnd, column.meta_data, schemaPath, { file: asyncBuffer, compressors })
+    const result = readColumn(reader, 0, rowGroupEnd, column.meta_data, schemaPath, { file })
     expect(result).toEqual(expected)
   })
 
   it('readColumn should return a typed array', async () => {
     const testFile = 'test/files/datapage_v2.snappy.parquet'
-    const asyncBuffer = await asyncBufferFromFile(testFile)
-    const arrayBuffer = await asyncBuffer.slice(0)
+    const file = await asyncBufferFromFile(testFile)
+    const arrayBuffer = await file.slice(0)
     const metadata = parquetMetadata(arrayBuffer)
 
     const column = metadata.row_groups[0].columns[1] // second column
@@ -42,7 +41,7 @@ describe('readColumn', () => {
     const schemaPath = getSchemaPath(metadata.schema, column.meta_data?.path_in_schema ?? [])
     const reader = { view: new DataView(columnArrayBuffer), offset: 0 }
 
-    const columnData = readColumn(reader, 0, Infinity, column.meta_data, schemaPath, { file: asyncBuffer, compressors })
+    const columnData = readColumn(reader, 0, Infinity, column.meta_data, schemaPath, { file })
     expect(columnData[0]).toBeInstanceOf(Int32Array)
   })
 })