diff --git a/bench/rollup_config_benchmarks.ts b/bench/rollup_config_benchmarks.ts
index 1a08970ec3..8bfa680a4d 100644
--- a/bench/rollup_config_benchmarks.ts
+++ b/bench/rollup_config_benchmarks.ts
@@ -26,15 +26,11 @@ const replaceConfig = {
     'process.env.NODE_ENV': JSON.stringify('production')
 };
 
-const watch = process.env.ROLLUP_WATCH === 'true';
-const srcDir = watch ? '' : 'rollup/build/tsc/';
-const inputExt = watch ? 'ts' : 'js';
-
-const allPlugins = plugins(true, true, watch).concat(replace(replaceConfig));
+const allPlugins = plugins(true, true).concat(replace(replaceConfig));
 const intro = fs.readFileSync('rollup/bundle_prelude.js', 'utf8');
 
 const splitConfig = (name: string): RollupOptions[] => [{
-    input: [`${srcDir}bench/${name}/benchmarks.${inputExt}`, `${srcDir}src/source/worker.${inputExt}`],
+    input: [`bench/${name}/benchmarks.ts`, 'src/source/worker.ts'],
     output: {
         dir: `rollup/build/benchmarks/${name}`,
         format: 'amd',
@@ -57,7 +53,7 @@ const splitConfig = (name: string): RollupOptions[] => [{
 }];
 
 const viewConfig: RollupOptions = {
-    input: `${srcDir}bench/benchmarks_view.${inputExt}${watch ? 'x' : ''}`,
+    input: 'bench/benchmarks_view.tsx',
     output: {
         name: 'Benchmarks',
         file: 'bench/benchmarks_view_generated.js',
@@ -67,7 +63,7 @@ const viewConfig: RollupOptions = {
     },
     plugins: [
         nodeResolve,
-        watch ? typescript() : null,
+        typescript(),
         commonjs(),
         replace(replaceConfig)
     ].filter(Boolean)
diff --git a/build/rollup_plugins.ts b/build/rollup_plugins.ts
index 83d31513f0..26614f9692 100644
--- a/build/rollup_plugins.ts
+++ b/build/rollup_plugins.ts
@@ -18,7 +18,7 @@ export const nodeResolve = resolve({
     extensions: ['.mjs', '.js', '.json', '.node', '.ts']
 });
 
-export const plugins = (minified: boolean, production: boolean, watch: boolean): Plugin[] => [
+export const plugins = (minified: boolean, production: boolean): Plugin[] => [
     minifyStyleSpec(),
     json(),
     // https://github.com/zaach/jison/issues/351
@@ -45,7 +45,7 @@ export const plugins = (minified: boolean, production: boolean, watch: boolean):
         include: ['**/*'], // by default, unassert only includes .js files
     }) : false,
     nodeResolve,
-    watch ? typescript() : false,
+    typescript(),
     commonjs({
         // global keyword handling causes Webpack compatibility issues, so we disabled it:
         // https://github.com/mapbox/mapbox-gl-js/pull/6956
diff --git a/package.json b/package.json
index 8f17c2d5fd..c80ade8430 100644
--- a/package.json
+++ b/package.json
@@ -145,17 +145,13 @@
     "generate-style-spec": "node --loader ts-node/esm --experimental-specifier-resolution=node build/generate-style-spec.ts",
     "generate-typings": "node --loader ts-node/esm --experimental-specifier-resolution=node build/generate-typings.ts",
     "generate-query-test-fixtures": "node --loader ts-node/esm --experimental-specifier-resolution=node build/generate-query-test-fixtures.ts",
-    "build-swc-src": "swc src -d rollup/build/tsc/src -D -s",
-    "build-swc-bench": "swc bench -d rollup/build/tsc/bench -D -s",
-    "build-tsc": "npm run build-swc-src && npm run build-swc-bench",
-    "build-tsc-old": "tsc --outDir rollup/build/tsc",
-    "build-dev": "npm run build-tsc && rollup --configPlugin @rollup/plugin-typescript -c --environment BUILD:dev",
+    "build-dev": "rollup --configPlugin @rollup/plugin-typescript -c --environment BUILD:dev",
     "watch-dev": "rollup --configPlugin @rollup/plugin-typescript -c --environment BUILD:dev --watch",
-    "build-prod": "npm run build-tsc && rollup --configPlugin @rollup/plugin-typescript -c --environment BUILD:production",
-    "build-prod-min": "npm run build-tsc && rollup --configPlugin @rollup/plugin-typescript -c --environment BUILD:production,MINIFY:true",
+    "build-prod": "rollup --configPlugin @rollup/plugin-typescript -c --environment BUILD:production",
+    "build-prod-min": "rollup --configPlugin @rollup/plugin-typescript -c --environment BUILD:production,MINIFY:true",
     "build-csp": "rollup --configPlugin @rollup/plugin-typescript -c rollup.config.csp.ts",
     "build-css": "postcss -o dist/maplibre-gl.css src/css/maplibre-gl.css",
-    "build-style-spec": "npm run build-tsc && rollup --configPlugin @rollup/plugin-typescript -c rollup.config.style-spec.ts && rollup --configPlugin @rollup/plugin-typescript -c rollup.config.style-spec.ts --environment esm",
+    "build-style-spec": "rollup --configPlugin @rollup/plugin-typescript -c rollup.config.style-spec.ts && rollup --configPlugin @rollup/plugin-typescript -c rollup.config.style-spec.ts --environment esm",
     "build-diagrams": "cd docs/diagrams; ls *.plantuml | xargs -I {} puml generate --svg {} -o {}.svg",
     "watch-css": "postcss --watch -o dist/maplibre-gl.css src/css/maplibre-gl.css",
     "build-benchmarks": "npm run build-dev && rollup --configPlugin @rollup/plugin-typescript -c bench/rollup_config_benchmarks.ts",
diff --git a/rollup.config.csp.ts b/rollup.config.csp.ts
index b1afef1b14..1bec4093ae 100644
--- a/rollup.config.csp.ts
+++ b/rollup.config.csp.ts
@@ -16,10 +16,10 @@ const config = (input: InputOption, file: string, format: ModuleFormat): RollupO
         banner
     },
     treeshake: true,
-    plugins: plugins(true, true, false)
+    plugins: plugins(true, true)
 });
 
 export default [
-    config('rollup/build/tsc/src/index.js', 'dist/maplibre-gl-csp.js', 'umd'),
-    config('rollup/build/tsc/src/source/worker.js', 'dist/maplibre-gl-csp-worker.js', 'iife')
+    config('src/index.ts', 'dist/maplibre-gl-csp.js', 'umd'),
+    config('src/source/worker.ts', 'dist/maplibre-gl-csp-worker.js', 'iife')
 ];
diff --git a/rollup.config.style-spec.ts b/rollup.config.style-spec.ts
index 5805f9c222..6f496782e3 100644
--- a/rollup.config.style-spec.ts
+++ b/rollup.config.style-spec.ts
@@ -6,11 +6,12 @@ import json from '@rollup/plugin-json';
 import {fileURLToPath, pathToFileURL} from 'url';
 import {RollupOptions} from 'rollup';
 import {nodeResolve} from './build/rollup_plugins';
+import typescript from '@rollup/plugin-typescript';
 
 const esm = 'esm' in process.env;
 
 const config: RollupOptions[] = [{
-    input: 'rollup/build/tsc/src/style-spec/style-spec.js',
+    input: 'src/style-spec/style-spec.ts',
     output: {
         name: 'maplibreGlStyleSpecification',
         file: `dist/style-spec/${esm ? 'index.mjs' : 'index.js'}`,
@@ -48,6 +49,7 @@ const config: RollupOptions[] = [{
         json(),
         unassert(),
         nodeResolve,
+        typescript(),
         commonjs()
     ]
 }];
diff --git a/rollup.config.ts b/rollup.config.ts
index 36a2d9f944..0baff87be6 100644
--- a/rollup.config.ts
+++ b/rollup.config.ts
@@ -4,11 +4,8 @@ import {plugins} from './build/rollup_plugins';
 import banner from './build/banner';
 import {RollupOptions} from 'rollup';
 
-const {BUILD, MINIFY, ROLLUP_WATCH} = process.env;
+const {BUILD, MINIFY} = process.env;
 const minified = MINIFY === 'true';
-const watch = ROLLUP_WATCH === 'true';
-const srcDir = watch ? 'src' : 'rollup/build/tsc/src';
-const inputExt = watch ? 'ts' : 'js';
 const production = BUILD === 'production';
 const outputFile =
     !production ? 'dist/maplibre-gl-dev.js' :
@@ -22,7 +19,7 @@ const config: RollupOptions[] = [{
     // - rollup/build/maplibregl/shared.js: the set of modules that are dependencies of both the main module and the worker module
     //
     // This is also where we do all of our source transformations using the plugins.
-    input: [`${srcDir}/index.${inputExt}`, `${srcDir}/source/worker.${inputExt}`],
+    input: ['src/index.ts', 'src/source/worker.ts'],
     output: {
         dir: 'rollup/build/maplibregl',
         format: 'amd',
@@ -31,7 +28,7 @@ const config: RollupOptions[] = [{
         chunkFileNames: 'shared.js'
     },
     treeshake: production,
-    plugins: plugins(minified, production, watch)
+    plugins: plugins(minified, production)
 }, {
     // Next, bundle together the three "chunks" produced in the previous pass
     // into a single, final bundle. See rollup/bundle_prelude.js and
diff --git a/src/source/tile_id.test.ts b/src/source/tile_id.test.ts
index 476169e314..1f4fdec08f 100644
--- a/src/source/tile_id.test.ts
+++ b/src/source/tile_id.test.ts
@@ -43,7 +43,6 @@ describe('CanonicalTileID', () => {
         expect(new CanonicalTileID(17, 22914, 52870).url(['quadkey={quadkey}'], 1)).toBe('quadkey=02301322130000230');
 
         // Test case confirmed by quadkeytools package
-        // https://bitbucket.org/steele/quadkeytools/rollup/build/tsc/src/master/test/quadkey.js?fileviewer=file-view-default#quadkey.js-57
         expect(new CanonicalTileID(6, 29, 3).url(['quadkey={quadkey}'], 1)).toBe('quadkey=011123');
 
     });
diff --git a/test/build/style-spec.test.ts b/test/build/style-spec.test.ts
index 3f587c8cde..0f5d748762 100644
--- a/test/build/style-spec.test.ts
+++ b/test/build/style-spec.test.ts
@@ -11,9 +11,9 @@ describe('@maplibre/maplibre-gl-style-spec npm package', () => {
     test('build plain ES5 bundle in prepublish', async () => {
         jest.spyOn(console, 'warn').mockImplementation(() => {});
         await rollup.rollup({
-            input: './rollup/build/tsc/src/style-spec/style-spec.js',
+            input: './src/style-spec/style-spec.ts',
             plugins: [{
-                name: 'tset-checker',
+                name: 'test-checker',
                 resolveId: (id, importer) => {
                     if (
                         /^[\/\.]/.test(id) ||
@@ -31,7 +31,7 @@ describe('@maplibre/maplibre-gl-style-spec npm package', () => {
         }).catch(e => {
             expect(e).toBeFalsy();
         });
-    });
+    }, 40000);
 
     test('exports components directly, not behind `default` - https://github.com/mapbox/mapbox-gl-js/issues/6601', () => {
         // @ts-ignore