GH-38900:[JS] Fix spelling

js/src/enum.ts

@@ -21,7 +21,7 @@
 // v4 doesn't seem to be able to tree-shake the rest of those exports.
 //
 // We will have to keep these enums in sync when we re-generate the flatbuffers
-// code from the shchemas. See js/DEVELOP.md for info on how to run flatbuffers
+// code from the schemas. See js/DEVELOP.md for info on how to run flatbuffers
 // code generation.
 //
 ////
@@ -174,7 +174,7 @@ export enum Type {
     FixedSizeBinary = 15, /** Fixed-size binary. Each value occupies the same number of bytes */
     FixedSizeList = 16, /** Fixed-size list. Each value occupies the same number of bytes */
     Map = 17, /** Map of named logical types */
-    Duration = 18, /** Measure of elapsed time in either seconds, miliseconds, microseconds or nanoseconds. */
+    Duration = 18, /** Measure of elapsed time in either seconds, milliseconds, microseconds or nanoseconds. */
 
     Dictionary = -1, /** Dictionary aka Category type */
     Int8 = -2,
@@ -215,7 +215,7 @@ export enum BufferType {
     OFFSET = 0,
 
     /**
-     * actual data, either wixed width primitive types in slots or variable width delimited by an OFFSET vector
+     * actual data, either fixed width primitive types in slots or variable width delimited by an OFFSET vector
      */
     DATA = 1,
 

js/src/fb/timestamp.ts

@@ -105,7 +105,7 @@ import { TimeUnit } from './time-unit.js';
  * no indication of how to map this information to a physical point in time.
  * Naive date-times must be handled with care because of this missing
  * information, and also because daylight saving time (DST) may make
- * some values ambiguous or non-existent. A naive date-time may be
+ * some values ambiguous or nonexistent. A naive date-time may be
  * stored as a struct with Date and Time fields. However, it may also be
  * encoded into a Timestamp column with an empty timezone. The timestamp
  * values should be computed "as if" the timezone of the date-time values

js/src/ipc/reader.ts

@@ -185,7 +185,7 @@ export class RecordBatchReader<T extends TypeMap = any> extends ReadableInterop<
 
 //
 // Since TS is a structural type system, we define the following subclass stubs
-// so that concrete types exist to associate with with the interfaces below.
+// so that concrete types exist to associate with the interfaces below.
 //
 // The implementation for each RecordBatchReader is hidden away in the set of
 // `RecordBatchReaderImpl` classes in the second half of this file. This allows

js/src/vector.ts

@@ -302,8 +302,8 @@ export class Vector<T extends DataType = any> {
      * values.
      *
      * Memoization is very useful when decoding a value is expensive such as
-     * Uft8. The memoization creates a cache of the size of the Vector and
-     * therfore increases memory usage.
+     * Utf8. The memoization creates a cache of the size of the Vector and
+     * therefore increases memory usage.
      *
      * @returns A new vector that memoizes calls to {@link get}.
      */

js/src/visitor/builderctor.ts

@@ -96,7 +96,7 @@ export class GetBuilderCtor extends Visitor {
     public visitDurationSecond() { return DurationSecondBuilder; }
     public visitDurationMillisecond() { return DurationMillisecondBuilder; }
     public visitDurationMicrosecond() { return DurationMicrosecondBuilder; }
-    public visistDurationNanosecond() { return DurationNanosecondBuilder; }
+    public visitDurationNanosecond() { return DurationNanosecondBuilder; }
     public visitFixedSizeList() { return FixedSizeListBuilder; }
     public visitMap() { return MapBuilder; }
 }

js/src/visitor/indexof.ts

@@ -144,7 +144,7 @@ function indexOfValue<T extends DataType>(data: Data<T>, searchElement?: T['TVal
 function indexOfUnion<T extends DataType>(data: Data<T>, searchElement?: T['TValue'] | null, fromIndex?: number): number {
     // Unions are special -- they do have a nullBitmap, but so can their children.
     // If the searchElement is null, we don't know whether it came from the Union's
-    // bitmap or one of its childrens'. So we don't interrogate the Union's bitmap,
+    // bitmap or one of its children's. So we don't interrogate the Union's bitmap,
     // since that will report the wrong index if a child has a null before the Union.
     const get = getVisitor.getVisitFn(data);
     const compare = createElementComparator(searchElement);

js/src/visitor/jsonvectorassembler.ts

@@ -62,9 +62,9 @@ export class JSONVectorAssembler extends Visitor {
 
     /** @nocollapse */
     public static assemble<T extends RecordBatch>(...batches: T[]) {
-        const assemlber = new JSONVectorAssembler();
+        const assembler = new JSONVectorAssembler();
         return batches.map(({ schema, data }) => {
-            return assemlber.visitMany(schema.fields, data.children);
+            return assembler.visitMany(schema.fields, data.children);
         });
     }