fix linting errors

Author: j4ys0n

lib/codec/plain.ts

@@ -154,7 +154,7 @@ function decodeValues_INT96(cursor: Cursor, count: number, opts?: Options) {
   for (let i = 0; i < count; ++i) {
     const nanosSinceMidnight = INT53.readInt64LE(cursor.buffer, cursor.offset);
     const julianDay = cursor.buffer.readUInt32LE(cursor.offset + 8);
-    
+
     if (treatAsTimestamp) {
       // Convert Julian day and nanoseconds to a timestamp
       values.push(convertInt96ToTimestamp(julianDay, nanosSinceMidnight));
@@ -166,7 +166,7 @@ function decodeValues_INT96(cursor: Cursor, count: number, opts?: Options) {
         values.push(nanosSinceMidnight); // positive value
       }
     }
-    
+
     cursor.offset += 12;
   }
 
@@ -178,21 +178,21 @@ function decodeValues_INT96(cursor: Cursor, count: number, opts?: Options) {
  * In the Parquet format, INT96 timestamps are stored as:
  * - The first 8 bytes (low) represent nanoseconds within the day
  * - The last 4 bytes (high) represent the Julian day
- * 
+ *
  * @param julianDay Julian day number
  * @param nanosSinceMidnight Nanoseconds since midnight
  * @returns JavaScript Date object (UTC)
  */
 function convertInt96ToTimestamp(julianDay: number, nanosSinceMidnight: number | bigint): Date {
   // Julian day 2440588 corresponds to 1970-01-01 (Unix epoch)
   const daysSinceEpoch = julianDay - 2440588;
-  
+
   // Convert days to milliseconds (86,400,000 ms per day)
   const millisSinceEpoch = daysSinceEpoch * 86400000;
-  
+
   // Convert nanoseconds to milliseconds
   const nanosInMillis = Number(BigInt(nanosSinceMidnight) / 1000000n);
-  
+
   // Create a UTC Date
   return new Date(millisSinceEpoch + nanosInMillis);
 }

lib/reader.ts

@@ -199,7 +199,7 @@ export class ParquetReader {
     if (!PARQUET_VERSIONS.includes(metadata.version)) {
       throw 'invalid parquet version';
     }
-    
+
     // Default to false for backward compatibility
     this.treatInt96AsTimestamp = opts.treatInt96AsTimestamp === true;
 
@@ -761,7 +761,7 @@ export class ParquetEnvelopeReader {
       compression: compression,
       column: field,
       num_values: metadata.num_values,
-      treatInt96AsTimestamp: this.treatInt96AsTimestamp
+      treatInt96AsTimestamp: this.treatInt96AsTimestamp,
     });
 
     // If this exists and is greater than zero then we need to have an offset

test/int96_timestamp.test.js

@@ -3,22 +3,23 @@ const chai = require('chai');
 const assert = chai.assert;
 const { ParquetReader } = require('../lib/reader');
 
-describe('INT96 timestamp handling', function() {
+describe('INT96 timestamp handling', function () {
   this.timeout(30000); // Increase timeout for URL fetching
-  
-  const testUrl = 'https://aws-public-blockchain.s3.us-east-2.amazonaws.com/v1.0/eth/traces/date%3D2016-05-22/part-00000-54f4b70c-db10-479c-a117-e3cc760a7e26-c000.snappy.parquet';
-  
-  it('should handle INT96 values as numbers by default', async function() {
+
+  const testUrl =
+    'https://aws-public-blockchain.s3.us-east-2.amazonaws.com/v1.0/eth/traces/date%3D2016-05-22/part-00000-54f4b70c-db10-479c-a117-e3cc760a7e26-c000.snappy.parquet';
+
+  it('should handle INT96 values as numbers by default', async function () {
     const reader = await ParquetReader.openUrl(testUrl);
     const cursor = reader.getCursor();
-    
+
     // Read the first row
     const row = await cursor.next();
-    
+
     // Find INT96 columns (if any)
     const schema = reader.getSchema();
     const fields = schema.fields;
-    
+
     // Check if there are any INT96 columns and verify they're numbers
     let foundInt96 = false;
     for (const fieldName in fields) {
@@ -28,26 +29,26 @@ describe('INT96 timestamp handling', function() {
         assert.isNumber(row[fieldName], `Expected ${fieldName} to be a number`);
       }
     }
-    
+
     // If no INT96 columns were found, log a message
     if (!foundInt96) {
       console.log('No INT96 columns found in the test file');
     }
-    
+
     await reader.close();
   });
-  
-  it('should convert INT96 values to timestamps when option is enabled', async function() {
+
+  it('should convert INT96 values to timestamps when option is enabled', async function () {
     const reader = await ParquetReader.openUrl(testUrl, { treatInt96AsTimestamp: true });
     const cursor = reader.getCursor();
-    
+
     // Read the first row
     const row = await cursor.next();
-    
+
     // Find INT96 columns (if any)
     const schema = reader.getSchema();
     const fields = schema.fields;
-    
+
     // Check if there are any INT96 columns and verify they're Date objects
     let foundInt96 = false;
     for (const fieldName in fields) {
@@ -58,12 +59,12 @@ describe('INT96 timestamp handling', function() {
         console.log(`${fieldName} timestamp:`, row[fieldName]);
       }
     }
-    
+
     // If no INT96 columns were found, log a message
     if (!foundInt96) {
       console.log('No INT96 columns found in the test file');
     }
-    
+
     await reader.close();
   });
 });