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TypeScript runtime comparisons

Comparison of Node.js TypeScript runtimes.

Disclaimer: This comparison is by the author & maintainer of tsx

Compared runtimes

<!-- runtimes:start --> <!-- runtimes:end -->

Methodology

Symbols

SymbolDescription
✅Pass (Sometimes clickable)
❌Fail
<span title="Example error message">⛔️</span>Error (Hover to see error message)

Project stats

<!-- projectStats:start -->
tsx@swc/registeresbuild-runnerjitisucrasets-nodetsm
npm downloads
Install size
GitHub stars
Issues open
Issues closed
Last commit
<!-- projectStats:end -->

Transformation

Supported transformation features and code tranformation correctness.

<!-- transformCommonjs:start -->

Package type: CommonJS

tsx@swc/registeresbuild-runnerjitisucrasets-nodetsm
TypeScript syntax✅✅✅✅✅✅✅
ESM → CJS: import/export syntax✅❌✅✅✅✅❌
ESM → CJS: import.meta.url shim✅❌❌✅❌❌❌
CJS scope in .js file✅✅✅✅✅✅✅
CJS scope in .ts file✅✅✅✅✅✅❌
CJS scope in .cjs file✅✅✅✅✅✅✅
CJS scope in .cts file✅✅✅✅✅✅❌
No CJS scope in .mjs file✅✅✅❌✅✅✅
No CJS scope in .mts file✅❌❌❌❌✅✅
Source maps✅✅✅❌❌✅✅
<!-- transformCommonjs:end --> <!-- transformModule:start -->

Package type: Module

tsx@swc/registeresbuild-runnerjitisucrasets-nodetsm
TypeScript syntax✅<span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.ts' for ./package-module/transformation/ts.ts">⛔️</span><span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.ts' for ./package-module/transformation/ts.ts">⛔️</span>✅<span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.ts' for ./package-module/transformation/ts.ts">⛔️</span>✅✅
CJS scope in .cjs file✅✅✅✅✅✅✅
CJS scope in .cts file✅<span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.cts' for ./package-module/transformation/cjs-scope.cts">⛔️</span><span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.cts' for ./package-module/transformation/cjs-scope.cts">⛔️</span>✅<span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.cts' for ./package-module/transformation/cjs-scope.cts">⛔️</span>✅❌
No CJS scope in .js file✅✅✅❌✅✅✅
No CJS scope in .ts file✅<span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.ts' for ./package-module/transformation/cjs-scope.ts">⛔️</span><span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.ts' for ./package-module/transformation/cjs-scope.ts">⛔️</span>❌<span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.ts' for ./package-module/transformation/cjs-scope.ts">⛔️</span>✅✅
No CJS scope in .mjs file✅✅✅❌✅✅✅
No CJS scope in .mts file✅<span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.mts' for ./package-module/transformation/cjs-scope.mts">⛔️</span><span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.mts' for ./package-module/transformation/cjs-scope.mts">⛔️</span>❌<span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.mts' for ./package-module/transformation/cjs-scope.mts">⛔️</span>✅✅
Source maps✅<span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.ts' for ./package-module/transformation/source-maps.ts">⛔️</span><span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.ts' for ./package-module/transformation/source-maps.ts">⛔️</span>❌<span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.ts' for ./package-module/transformation/source-maps.ts">⛔️</span>✅✅
<!-- transformModule:end -->

* CommonJS scope (CJS scope) refers to having the following variables available in the module scope: module, exports, require, __filename, __dirname.

Resolution

Whether require()/import() can resolve a given specifier.

<!-- resolutionRequire:start -->

require()

tsx@swc/registeresbuild-runnerjitisucrasets-nodetsm
.ts file✅✅✅✅✅✅✅
.ts file via .js✅❌❌❌❌✅❌
.ts file without extension✅✅✅✅✅✅❌
index.ts file via directory✅✅✅✅✅✅❌
.cts file✅✅✅✅✅✅✅
.cts file via .cjs✅❌❌❌❌✅❌
.mts file✅✅✅✅✅❌✅
.mts file via .mjs✅❌❌❌❌❌❌
node: prefix✅❌❌✅❌❌✅
tsconfig.json paths✅❌❌❌❌❌❌
<!-- resolutionRequire:end --> <!-- resolutionImport:start -->

import()

tsx@swc/registeresbuild-runnerjitisucrasets-nodetsm
.ts file✅❌❌❌✅✅✅
.ts file via .js✅❌❌❌❌✅✅
.ts file without extension✅❌❌❌✅❌✅
index.ts file via directory✅❌❌❌✅❌❌
.cts file✅❌❌❌✅✅✅
.cts file via .cjs✅❌❌❌❌✅✅
.mts file✅❌❌❌✅✅✅
.mts file via .mjs✅❌❌❌❌✅✅
tsconfig.json paths✅❌❌❌❌❌❌
<!-- resolutionImport:end -->

Interoperability

Whether it can correctly load a file for interoperability.

<!-- interopCommonjs:start -->

Package type: CommonJS

tsx@swc/registeresbuild-runnerjitisucrasets-nodetsm
require() .js file (ESM export)✅<span title="SyntaxError: Unexpected token 'export'">⛔️</span>✅✅✅✅<span title="SyntaxError: Unexpected token 'export'">⛔️</span>
require() .ts file (ESM export)✅<span title="SyntaxError: Unexpected token 'export'">⛔️</span>✅✅✅✅<span title="SyntaxError: Unexpected token 'export'">⛔️</span>
require() .cjs file✅✅✅✅✅✅✅
require() .cts file✅✅✅✅✅✅✅
require() .mjs file✅<span title="SyntaxError: Unexpected token 'export'">⛔️</span>✅✅<span title="Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: ./package-commonjs/interops/mjs.mjs">⛔️</span><span title="Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: ./package-commonjs/interops/mjs.mjs">⛔️</span><span title="Error [ERR_REQUIRE_ESM]: require() of ES Module ./package-commonjs/interops/mjs.mjs not supported.">⛔️</span>
require() .mts file✅<span title="SyntaxError: Unexpected token 'export'">⛔️</span><span title="SyntaxError: Unexpected token 'export'">⛔️</span>✅<span title="SyntaxError: Unexpected token 'export'">⛔️</span><span title="Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: ./package-commonjs/interops/mts.mts">⛔️</span><span title="SyntaxError: Unexpected token 'export'">⛔️</span>
import() .js file (ESM export)✅<span title="SyntaxError: Unexpected token 'export'">⛔️</span>❌<span title="SyntaxError: Unexpected token 'export'">⛔️</span>✅❌<span title="SyntaxError: Unexpected token 'export'">⛔️</span>
import() .ts file (ESM export)✅<span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.ts' for ./package-commonjs/interops/ts.ts">⛔️</span><span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.ts' for ./package-commonjs/interops/ts.ts">⛔️</span><span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.ts' for ./package-commonjs/interops/ts.ts">⛔️</span>✅❌✅
import() .cjs file✅✅✅✅❌✅✅
import() .cts file✅<span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.cts' for ./package-commonjs/interops/cts.cts">⛔️</span><span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.cts' for ./package-commonjs/interops/cts.cts">⛔️</span><span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.cts' for ./package-commonjs/interops/cts.cts">⛔️</span>❌✅✅
import() .mjs file✅✅✅✅<span title="Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: ./package-commonjs/interops/mjs.mjs">⛔️</span>✅✅
import() .mts file✅<span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.mts' for ./package-commonjs/interops/mts.mts">⛔️</span><span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.mts' for ./package-commonjs/interops/mts.mts">⛔️</span><span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.mts' for ./package-commonjs/interops/mts.mts">⛔️</span><span title="SyntaxError: Unexpected token 'export'">⛔️</span>✅✅
<!-- interopCommonjs:end --> <!-- interopModule:start -->

Package type: Module

tsx@swc/registeresbuild-runnerjitisucrasets-nodetsm
require() .js file (ESM export)✅<span title="Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: ./package-module/interops/esm.js">⛔️</span><span title="Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: ./package-module/interops/esm.js">⛔️</span><span title="Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: ./package-module/interops/esm.js">⛔️</span><span title="Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: ./package-module/interops/esm.js">⛔️</span><span title="Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: ./package-module/interops/esm.js">⛔️</span><span title="Error [ERR_REQUIRE_ESM]: require() of ES Module ./package-module/interops/esm.js from /Users/osame/Documents/public-github/privatenumber/ts-runtime-comparison/package-module/require-log.js not supported.">⛔️</span>
require() .ts file (ESM export)✅<span title="SyntaxError: Unexpected token 'export'">⛔️</span>✅<span title="SyntaxError: Unexpected token 'export'">⛔️</span>✅<span title="Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: ./package-module/interops/ts.ts">⛔️</span><span title="SyntaxError: Unexpected token 'export'">⛔️</span>
require() .cjs file✅✅✅✅✅✅✅
require() .cts file✅✅✅✅✅✅✅
require() .mjs file✅<span title="SyntaxError: Unexpected token 'export'">⛔️</span>✅<span title="Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: ./package-module/interops/mjs.mjs">⛔️</span><span title="Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: ./package-module/interops/mjs.mjs">⛔️</span><span title="Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: ./package-module/interops/mjs.mjs">⛔️</span><span title="Error [ERR_REQUIRE_ESM]: require() of ES Module ./package-module/interops/mjs.mjs not supported.">⛔️</span>
require() .mts file✅<span title="SyntaxError: Unexpected token 'export'">⛔️</span><span title="SyntaxError: Unexpected token 'export'">⛔️</span><span title="SyntaxError: Unexpected token 'export'">⛔️</span><span title="SyntaxError: Unexpected token 'export'">⛔️</span><span title="Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: ./package-module/interops/mts.mts">⛔️</span><span title="SyntaxError: Unexpected token 'export'">⛔️</span>
import() .js file (ESM export)✅✅✅✅✅✅✅
import() .ts file (ESM export)✅<span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.ts' for ./package-module/interops/ts.ts">⛔️</span><span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.ts' for ./package-module/interops/ts.ts">⛔️</span>✅<span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.ts' for ./package-module/interops/ts.ts">⛔️</span>✅✅
import() .cjs file✅✅✅❌✅✅✅
import() .cts file✅<span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.cts' for ./package-module/interops/cts.cts">⛔️</span><span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.cts' for ./package-module/interops/cts.cts">⛔️</span>❌<span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.cts' for ./package-module/interops/cts.cts">⛔️</span>✅✅
import() .mjs file✅✅✅✅✅✅✅
import() .mts file✅<span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.mts' for ./package-module/interops/mts.mts">⛔️</span><span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.mts' for ./package-module/interops/mts.mts">⛔️</span>✅<span title="TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension '.mts' for ./package-module/interops/mts.mts">⛔️</span>✅✅
<!-- interopModule:end -->

Performance features

<!-- performance:start -->
tsx@swc/registeresbuild-runnerjitisucrasets-nodetsm
CompileresbuildSWCesbuildBabelSucrase (Babel fork)TypeScript / SWCesbuild
Disk cache✅ <sup>?</sup>❌✅ <sup>?</sup>✅ <sup>?</sup>❌❌ <sup>?</sup>❌
<!-- performance:end -->

DX features

<!-- dx:start -->
tsx@swc/registeresbuild-runnerjitisucrasets-nodetsm
TypeScript REPL✅ <sup>?</sup>❌❌❌❌✅ <sup>?</sup>❌
Watch mode✅ <sup>?</sup>❌❌❌❌❌❌
Type checking❌❌❌❌❌✅❌
Hides experimental feature warnings✅----✅ <sup>?</sup>❌
Binariestsxswc-nodeesrjitisucrase-nodets-node, ts-node-esm, +4tsm
<!-- dx:end -->

Testing

<!-- testing:start -->
tsx@swc/registeresbuild-runnerjitisucrasets-nodetsm
Operating systemsLinux & WindowsLinuxNo testsLinux & WindowsLinuxLinux & WindowsLinux & Windows
Node.js versions12.20 ~ 18Latest LTSNo tests1614 & 1612 ~ 18 + Nightly12.22.10 ~ 16.14
<!-- testing:end --> <!-- links:start --> <!-- links:end -->