Use regular arrays instead of Int32Array

src/sourcemap-codec.ts

@@ -27,12 +27,12 @@ export function decode(mappings: string): SourceMapMappings {
 const c = mappings.charCodeAt(i);
 
 if (c === 44) { // ","
-if (segment.length) line.push(new Int32Array(segment) as any);
+if (segment.length) line.push(segment as SourceMapSegment);
 segment = [];
 j = 0;
 
 } else if (c === 59) { // ";"
-if (segment.length) line.push(new Int32Array(segment) as any);
+if (segment.length) line.push(segment as SourceMapSegment);
 segment = [];
 j = 0;
 decoded.push(line);
@@ -88,7 +88,7 @@ export function decode(mappings: string): SourceMapMappings {
 }
 }
 
-if (segment.length) line.push(new Int32Array(segment) as any);
+if (segment.length) line.push(segment as SourceMapSegment);
 decoded.push(line);
 
 return decoded;

test/test.js

@@ -175,10 +175,7 @@ describe('sourcemap-codec', () => {
 describe('decode()', () => {
 tests.forEach((test, i) => {
 it('decodes sample ' + i, () => {
-const expected = test.decoded.map(line => {
-return line.map(segment => new Int32Array(segment));
-});
-assert.deepEqual(decode(test.encoded), expected);
+assert.deepEqual(decode(test.encoded), test.decoded);
 });
 });
 });