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An open API service providing package, version and dependency metadata of many open source software ecosystems and registries.

crates.io "ecmascript-parser" keyword

Top 1.2% on crates.io
swc_atoms 9.0.0 💰
Atoms for the swc project.
101 versions - Latest release: 5 months ago - 114 dependent packages - 1,262 dependent repositories - 23.7 million downloads total - 31,152 stars on GitHub - 2 maintainers
Top 1.7% on crates.io
swc_visit 2.0.1 💰
Visitor generator for stable rustc
37 versions - Latest release: 10 months ago - 11 dependent packages - 1,232 dependent repositories - 22.4 million downloads total - 29,915 stars on GitHub - 2 maintainers
Top 1.7% on crates.io
string_enum 1.0.2 💰
String based enum.
17 versions - Latest release: 9 months ago - 10 dependent packages - 1,268 dependent repositories - 22.3 million downloads total - 29,915 stars on GitHub - 2 maintainers
Top 1.8% on crates.io
swc_ecma_transforms_testing 44.0.0 💰
rust port of babel and closure compiler.
595 versions - Latest release: about 13 hours ago - 36 dependent packages - 657 dependent repositories - 2.78 million downloads total - 32,945 stars on GitHub - 2 maintainers
Top 1.2% on crates.io
swc_ecma_parser 37.0.0 💰
Feature-complete es2019 parser.
705 versions - Latest release: about 13 hours ago - 108 dependent packages - 1,261 dependent repositories - 27 million downloads total - 29,915 stars on GitHub - 2 maintainers
hstr 3.0.4 💰
A string type which is optimized for hash operations.
38 versions - Latest release: 3 months ago - 2 dependent packages - 1 dependent repositories - 19.3 million downloads total - 33,331 stars on GitHub - 2 maintainers
swc_ecma_regexp_visit 0.8.0 💰
Visitor for ECMAScript regular expressions
10 versions - Latest release: about 1 month ago - 37 thousand downloads total - 33,331 stars on GitHub - 2 maintainers
swc_ecma_regexp 0.8.0 💰
ECMAScript regular expressions
10 versions - Latest release: about 1 month ago - 36.8 thousand downloads total - 33,331 stars on GitHub - 2 maintainers
swc_ecma_hooks 0.5.0 💰
Composable hooks for swc ecmascript visitors
5 versions - Latest release: about 1 month ago - 169 thousand downloads total - 33,331 stars on GitHub - 2 maintainers
swc_ecma_compat_regexp 2.0.0 💰
Transpiles modern RegExp features to ES5-compatible patterns
3 versions - Latest release: about 1 month ago - 34.5 thousand downloads total - 33,331 stars on GitHub - 2 maintainers
swc_sourcemap 10.0.2 💰
Forked from https://github.com/getsentry/rust-sourcemap
7 versions - Latest release: about 1 month ago - 1.88 million downloads total - 33,331 stars on GitHub - 2 maintainers
swc_es_visit 0.1.0 💰
Visitor interfaces for swc_es_ast
1 version - Latest release: about 1 month ago - 23 downloads total - 33,331 stars on GitHub - 1 maintainer
swc_ecma_lexer 35.0.0 💰
Feature-complete es2019 parser.
51 versions - Latest release: 12 days ago - 2.8 million downloads total - 33,331 stars on GitHub - 2 maintainers
Top 1.9% on crates.io
swc_config 4.0.0 💰
Types for configuring swc
23 versions - Latest release: about 1 month ago - 12 dependent packages - 786 dependent repositories - 4.44 million downloads total - 33,331 stars on GitHub - 2 maintainers
swc_ecma_transformer 11.0.0 💰
Compatibility layer for the ECMAScript standard
18 versions - Latest release: 12 days ago - 81.4 thousand downloads total - 33,331 stars on GitHub - 2 maintainers
swc_ts_fast_strip 46.0.0 💰
Super-fast TypeScript stripper based on SWC
30 versions - Latest release: 12 days ago - 79.3 thousand downloads total - 33,331 stars on GitHub - 2 maintainers
swc_plugin_backend_wasmer 8.0.0 💰
Runner backend for swc plugins. This crate is INTERNAL crate and used by swc itself.
9 versions - Latest release: about 1 month ago - 61.5 thousand downloads total - 33,331 stars on GitHub - 2 maintainers
swc_plugin_backend_wasmtime 7.0.0 💰
Runner backend (wasmtime) for swc plugins. This crate is INTERNAL crate and used by swc itself.
10 versions - Latest release: about 1 month ago - 1.8 thousand downloads total - 33,331 stars on GitHub - 2 maintainers
swc_ecma_regexp_common 0.0.1 💰
Commons for ECMAScript regular expressions
2 versions - Latest release: 10 months ago - 35.2 thousand downloads total - 33,331 stars on GitHub - 2 maintainers
swc_parallel 1.3.0 💰
Linter for the swc project
6 versions - Latest release: about 1 year ago - 311 thousand downloads total - 33,331 stars on GitHub - 2 maintainers
swc_ecma_regexp_ast 0.8.0 💰
AST definitions of ECMAScript regular expressions
10 versions - Latest release: about 1 month ago - 37.1 thousand downloads total - 33,331 stars on GitHub - 2 maintainers
Top 6.3% on crates.io
swc_html_minifier 48.0.0 💰
HTML minifier
1,046 versions - Latest release: 4 days ago - 2 dependent packages - 20 dependent repositories - 1.37 million downloads total - 29,221 stars on GitHub - 2 maintainers
Top 1.8% on crates.io
swc_ecma_transforms 49.0.0 💰
rust port of babel and closure compiler.
937 versions - Latest release: 12 days ago - 18 dependent packages - 567 dependent repositories - 2.72 million downloads total - 29,915 stars on GitHub - 2 maintainers
Top 8.6% on crates.io
swc_estree_compat 38.0.0 💰
Compatibility layer between estree and swc
1,086 versions - Latest release: 12 days ago - 1 dependent package - 1 dependent repositories - 1.2 million downloads total - 29,915 stars on GitHub - 2 maintainers
Top 10.0% on crates.io
swc_cli_impl 60.0.0 💰
Commandline for SWC (Internal crate with implementation)
277 versions - Latest release: 4 days ago - 1 dependent package - 1 dependent repositories - 298 thousand downloads total - 29,915 stars on GitHub - 2 maintainers
Top 10.0% on crates.io
swc_html 31.0.0 💰
HTML apis for rust
990 versions - Latest release: about 1 month ago - 16 dependent repositories - 1.25 million downloads total - 29,221 stars on GitHub - 2 maintainers
swc_cli 0.105.0 💰
Commandline for SWC
408 versions - Latest release: 4 days ago - 402 thousand downloads total - 29,221 stars on GitHub - 1 maintainer
Top 4.8% on crates.io
binding_macros 58.0.0 💰
Macros to build customized bindings interface
968 versions - Latest release: 4 days ago - 1 dependent package - 379 dependent repositories - 1.51 million downloads total - 29,915 stars on GitHub - 2 maintainers
Top 2.9% on crates.io
swc_ecma_testing 20.0.0 💰
Testing utilities for ecmascript
118 versions - Latest release: about 1 month ago - 4 dependent packages - 528 dependent repositories - 2.17 million downloads total - 29,221 stars on GitHub - 2 maintainers
Top 2.4% on crates.io
swc_css_utils 19.0.0 💰
Port of stylis
291 versions - Latest release: about 1 month ago - 7 dependent packages - 557 dependent repositories - 1.04 million downloads total - 29,915 stars on GitHub - 2 maintainers
Top 8.2% on crates.io
swc_ecma_compat_es2020 42.0.0 💰
ES2020 compatibility transforms
160 versions - Latest release: 12 days ago - 1 dependent package - 2 dependent repositories - 913 thousand downloads total - 29,915 stars on GitHub - 2 maintainers
Top 3.6% on crates.io
swc_graph_analyzer 14.0.1 💰
Graph analyzer
163 versions - Latest release: 9 months ago - 2 dependent packages - 531 dependent repositories - 1.53 million downloads total - 29,221 stars on GitHub - 2 maintainers
Top 7.2% on crates.io
swc_malloc 1.2.5 💰
Configures the best memory allocator for each platforms
11 versions - Latest release: about 1 month ago - 13 dependent packages - 1 dependent repositories - 101 thousand downloads total - 29,915 stars on GitHub - 1 maintainer
Top 3.8% on crates.io
swc_css_modules 19.0.0 💰
CSS modules
226 versions - Latest release: about 1 month ago - 3 dependent packages - 394 dependent repositories - 670 thousand downloads total - 29,221 stars on GitHub - 2 maintainers
swc_estree_macros 0.1.0 💰
Utility for AST converters
1 version - Latest release: over 4 years ago - 3 dependent packages - 2.26 thousand downloads total - 29,915 stars on GitHub - 1 maintainer
Top 7.1% on crates.io
swc_compiler_base 51.0.0 💰
Base crate for the 'swc' crate. This is not a public API.
251 versions - Latest release: 4 days ago - 1 dependent package - 9 dependent repositories - 938 thousand downloads total - 29,915 stars on GitHub - 2 maintainers
Top 8.1% on crates.io
swc_ecma_compat_bugfixes 44.0.0 💰
Compatibility fixes for browser bugs
167 versions - Latest release: 12 days ago - 1 dependent package - 2 dependent repositories - 929 thousand downloads total - 29,221 stars on GitHub - 2 maintainers
Top 4.5% on crates.io
swc_html_utils 16.0.0 💰
Utils for HTML
151 versions - Latest release: 5 months ago - 3 dependent packages - 28 dependent repositories - 395 thousand downloads total - 29,221 stars on GitHub - 2 maintainers
Top 2.9% on crates.io
swc_plugin_proxy 21.0.0 💰
Proxy structs to the hosts original structs for the plugin
215 versions - Latest release: about 1 month ago - 5 dependent packages - 538 dependent repositories - 2.36 million downloads total - 29,915 stars on GitHub - 2 maintainers
Top 3.2% on crates.io
from_variant 3.0.0 💰
Automatically derive From impls for enums
15 versions - Latest release: 5 months ago - 2 dependent packages - 1,260 dependent repositories - 22.5 million downloads total - 29,915 stars on GitHub - 2 maintainers
swc_es_parser 0.1.0 💰
High-performance ECMAScript parser backed by swc_es_ast
1 version - Latest release: about 1 month ago - 14 downloads total - 33,254 stars on GitHub - 1 maintainer
Top 3.7% on crates.io
swc_ecma_parser_macros 0.4.1 💰
Macros for swc_ecma_parser.
6 versions - Latest release: about 6 years ago - 4 dependent packages - 43 dependent repositories - 150 thousand downloads total - 29,221 stars on GitHub - 1 maintainer
swc_css_lints 20.0.0 💰
CSS linter
269 versions - Latest release: about 1 month ago - 278 thousand downloads total - 29,915 stars on GitHub - 2 maintainers
Top 3.4% on crates.io
swc_plugin_macro 1.1.0 💰
Macro support for authoring plugin's transform fn
32 versions - Latest release: 12 months ago - 6 dependent packages - 178 dependent repositories - 1.83 million downloads total - 29,221 stars on GitHub - 2 maintainers
swc_plugin_build 0.0.0 removed 💰
Base for swc plugins
1 version - Latest release: over 4 years ago - 1.6 thousand downloads total - 29,714 stars on GitHub - 1 maintainer
rplugin_macros 0.1.1 💰
Macros for rpluign, rust plugin system for AST processing
2 versions - Latest release: over 4 years ago - 1 dependent package - 1 dependent repositories - 4.91 thousand downloads total - 29,915 stars on GitHub - 1 maintainer
swc_babel_compat 0.2.0 💰
Compatibility layer between babel and swc
2 versions - Latest release: over 4 years ago - 2.77 thousand downloads total - 29,714 stars on GitHub - 1 maintainer
Top 3.7% on crates.io
swc_ecma_quote_macros 36.0.0 💰
Quasi quotation system for ecmascript
326 versions - Latest release: 12 days ago - 2 dependent packages - 400 dependent repositories - 1.03 million downloads total - 29,915 stars on GitHub - 2 maintainers
Top 3.4% on crates.io
enum_kind 0.2.2 💰
Easily manage values related to enum.
7 versions - Latest release: about 3 years ago - 2 dependent packages - 651 dependent repositories - 1.43 million downloads total - 29,915 stars on GitHub - 1 maintainer
swc_plugin_js_api 0.8.0 💰
API for the swc plugins
9 versions - Latest release: about 4 years ago - 3 dependent packages - 2 dependent repositories - 11.2 thousand downloads total - 29,915 stars on GitHub - 1 maintainer
Top 4.2% on crates.io
swc_html_visit 19.0.0 💰
Visitor for html
183 versions - Latest release: about 1 month ago - 6 dependent packages - 27 dependent repositories - 421 thousand downloads total - 29,915 stars on GitHub - 2 maintainers
Top 2.1% on crates.io
swc_node_base 0.5.9 💰
Speedy web compiler
17 versions - Latest release: over 2 years ago - 21 dependent packages - 325 dependent repositories - 278 thousand downloads total - 29,915 stars on GitHub - 2 maintainers
swc_babel_visit 0.1.0 💰
Visitor implementation for babel nodes
1 version - Latest release: over 4 years ago - 1 dependent package - 2.23 thousand downloads total - 29,221 stars on GitHub - 1 maintainer
Top 6.5% on crates.io
swc_xml_visit 19.0.0 💰
Visitor for xml
157 versions - Latest release: about 1 month ago - 3 dependent packages - 8 dependent repositories - 177 thousand downloads total - 29,915 stars on GitHub - 2 maintainers
Top 6.8% on crates.io
swc_node_bundler 59.0.0 💰
Speedy web compiler
964 versions - Latest release: 4 days ago - 1 dependent package - 8 dependent repositories - 1.11 million downloads total - 29,915 stars on GitHub - 2 maintainers
Top 2.0% on crates.io
swc_bundler 45.0.0 💰
Very fast ecmascript bundler
1,070 versions - Latest release: 12 days ago - 12 dependent packages - 582 dependent repositories - 2.84 million downloads total - 29,915 stars on GitHub - 2 maintainers
swc_util_types 1.0.0 removed 💰
Very useful types for the swc project.
1 version - Latest release: 10 months ago - 517 downloads total - 33,254 stars on GitHub - 2 maintainers
Top 2.9% on crates.io
swc_config_macro 1.0.1 💰
Macros to prevent mistakes
7 versions - Latest release: 10 months ago - 3 dependent packages - 786 dependent repositories - 4.36 million downloads total - 29,915 stars on GitHub - 2 maintainers
Top 5.5% on crates.io
swc_ecma_quote 36.0.0 💰
Quasi quotation system for ecmascript
334 versions - Latest release: 12 days ago - 4 dependent packages - 10 dependent repositories - 387 thousand downloads total - 29,915 stars on GitHub - 2 maintainers
Top 2.0% on crates.io
swc_cached 2.0.0 💰
Cached types for swc
26 versions - Latest release: about 1 year ago - 15 dependent packages - 526 dependent repositories - 2.8 million downloads total - 29,915 stars on GitHub - 2 maintainers
Top 7.1% on crates.io
swc_xml_parser 19.0.0 💰
XML parser
159 versions - Latest release: about 1 month ago - 2 dependent packages - 6 dependent repositories - 184 thousand downloads total - 29,915 stars on GitHub - 2 maintainers
Top 1.7% on crates.io
swc_ecma_transforms_macros 1.0.1 💰
Macros for swc_ecma_transforms.
17 versions - Latest release: 10 months ago - 16 dependent packages - 932 dependent repositories - 4.16 million downloads total - 31,152 stars on GitHub - 2 maintainers
Top 2.3% on crates.io
swc_timer 1.0.0 💰
Timings for swc
143 versions - Latest release: over 1 year ago - 7 dependent packages - 540 dependent repositories - 1.92 million downloads total - 29,915 stars on GitHub - 2 maintainers
bright_swc_css_ast 0.105.0 💰
AST definitions of css
1 version - Latest release: over 3 years ago - 1.67 thousand downloads total - 29,915 stars on GitHub - 1 maintainer
Top 2.1% on crates.io
swc_ecma_transforms_module 43.0.0 💰
rust port of babel and closure compiler.
784 versions - Latest release: 12 days ago - 11 dependent packages - 614 dependent repositories - 2.11 million downloads total - 29,915 stars on GitHub - 2 maintainers
Top 2.6% on crates.io
swc_css_prefixer 23.0.0 💰
Port of stylis
298 versions - Latest release: about 1 month ago - 7 dependent packages - 448 dependent repositories - 891 thousand downloads total - 29,915 stars on GitHub - 2 maintainers
bright_swc_html_ast 0.24.0 💰
AST definitions of html
3 versions - Latest release: over 3 years ago - 4.21 thousand downloads total - 29,915 stars on GitHub - 1 maintainer
swc_ts_fast_strip_binding 0.11.0 💰
Binding module for swc_ts_fast_strip
11 versions - Latest release: 12 days ago - 189 downloads total - 33,254 stars on GitHub - 2 maintainers
Top 5.1% on crates.io
swc_html_codegen 20.0.0 💰
HTML code generator for the swc project
228 versions - Latest release: about 1 month ago - 4 dependent packages - 27 dependent repositories - 472 thousand downloads total - 29,915 stars on GitHub - 2 maintainers
fastmem 0.1.0 💰
Configurable utilities for fast memory operations
2 versions - Latest release: about 4 years ago - 3.01 thousand downloads total - 29,915 stars on GitHub - 1 maintainer
swc_x_optimizer 0.1.0 removed 💰
Cross-module optimizer built on SWC
1 version - Latest release: almost 2 years ago - 1.36 thousand downloads total - 29,915 stars on GitHub - 1 maintainer
Top 6.4% on crates.io
swc_ecma_compat_es2022 42.0.0 💰
ES2022 compatibility transforms
159 versions - Latest release: 12 days ago - 2 dependent packages - 4 dependent repositories - 913 thousand downloads total - 29,915 stars on GitHub - 2 maintainers
Top 2.2% on crates.io
better_scoped_tls 1.0.1 💰
scoped-tls, but with good error message
5 versions - Latest release: 10 months ago - 5 dependent packages - 1,090 dependent repositories - 21.8 million downloads total - 29,221 stars on GitHub - 2 maintainers
Top 7.6% on crates.io
swc_ecma_compat_es2019 40.0.0 💰
ES2019 compatibility transforms
155 versions - Latest release: 12 days ago - 1 dependent package - 4 dependent repositories - 911 thousand downloads total - 29,221 stars on GitHub - 2 maintainers
swc_fast_ts_strip 23.0.2 💰
Super-fast TypeScript stripper based on SWC
63 versions - Latest release: 9 months ago - 58.6 thousand downloads total - 29,915 stars on GitHub - 2 maintainers
Top 2.2% on crates.io
swc_ecma_transforms_classes 39.0.0 💰
Helper for transforms for the swc project
549 versions - Latest release: 12 days ago - 6 dependent packages - 839 dependent repositories - 4.3 million downloads total - 29,915 stars on GitHub - 2 maintainers
swc_estree_visit 0.1.0 💰
Visitor implementation for estree nodes
1 version - Latest release: over 4 years ago - 1 dependent package - 1.54 thousand downloads total - 29,915 stars on GitHub - 1 maintainer
Top 2.5% on crates.io
swc_ecma_preset_env 50.0.0 💰
preset-env for the swc
872 versions - Latest release: 12 days ago - 7 dependent packages - 474 dependent repositories - 2.27 million downloads total - 29,915 stars on GitHub - 2 maintainers
Top 3.4% on crates.io
swc_css 23.0.0 💰
CSS apis for rust
446 versions - Latest release: about 1 month ago - 7 dependent packages - 137 dependent repositories - 562 thousand downloads total - 29,915 stars on GitHub - 2 maintainers
Top 2.5% on crates.io
swc_node_comments 19.0.0 💰
Implementation of Comments of swc_common
152 versions - Latest release: about 1 month ago - 6 dependent packages - 539 dependent repositories - 1.17 million downloads total - 29,221 stars on GitHub - 2 maintainers
Top 6.0% on crates.io
swc_xml_ast 19.0.0 💰
AST definitions of xml
147 versions - Latest release: about 1 month ago - 4 dependent packages - 6 dependent repositories - 171 thousand downloads total - 29,915 stars on GitHub - 2 maintainers
Top 9.9% on crates.io
swc_stylis 0.99.3 💰
Port of stylis
109 versions - Latest release: about 4 years ago - 77 dependent repositories - 150 thousand downloads total - 29,915 stars on GitHub - 1 maintainer
swc_ecma_diff 0.6.0 💰
Diffing tools for ECMAScript
8 versions - Latest release: about 4 years ago - 1 dependent package - 9.73 thousand downloads total - 29,714 stars on GitHub - 1 maintainer
better_string_cache 0.1.0 removed 💰
Fork of string_cache
1 version - Latest release: over 3 years ago - 1.71 thousand downloads total - 29,915 stars on GitHub - 1 maintainer
Top 7.6% on crates.io
swc_ecma_compat_es2021 40.0.0 💰
ES2021 compatibility transforms
150 versions - Latest release: 12 days ago - 1 dependent package - 4 dependent repositories - 902 thousand downloads total - 29,915 stars on GitHub - 2 maintainers
swc_js_interop 0.0.1 removed 💰
Support for invoking js codes from rust code
1 version - Latest release: almost 4 years ago - 1.48 thousand downloads total - 29,915 stars on GitHub - 1 maintainer
jsdoc 19.0.0 💰
JsDoc parser writen in rust
372 versions - Latest release: about 1 month ago - 1 dependent package - 8 dependent repositories - 576 thousand downloads total - 29,915 stars on GitHub - 2 maintainers
bright_swc_atoms 0.4.0 💰
Atoms for the swc project.
1 version - Latest release: over 3 years ago - 1 dependent package - 2.23 thousand downloads total - 29,915 stars on GitHub - 1 maintainer
Top 2.7% on crates.io
ast_node 5.0.0 💰
Macros for ast nodes.
50 versions - Latest release: 5 months ago - 3 dependent packages - 1,260 dependent repositories - 22.7 million downloads total - 29,915 stars on GitHub - 2 maintainers
Top 3.6% on crates.io
swc_html_ast 19.0.0 💰
AST definitions of html
175 versions - Latest release: about 1 month ago - 8 dependent packages - 28 dependent repositories - 431 thousand downloads total - 29,915 stars on GitHub - 2 maintainers
swc_webpack_ast 0.108.0 💰
Webpack AST optimizer
126 versions - Latest release: almost 4 years ago - 150 thousand downloads total - 29,915 stars on GitHub - 1 maintainer
swc_ecma_visit_std 5.0.0 💰
Visitors for swc ecmascript nodes which works on stable rustc
5 versions - Latest release: 11 months ago - 2.8 thousand downloads total - 33,254 stars on GitHub - 2 maintainers
swc_plugin_shared 0.0.0 💰
Base for swc plugins
1 version - Latest release: over 4 years ago - 1.55 thousand downloads total - 29,915 stars on GitHub - 1 maintainer
rplugin 0.3.0 💰
Rust plugin system for AST processing
4 versions - Latest release: over 4 years ago - 3 dependent packages - 2 dependent repositories - 6.93 thousand downloads total - 29,915 stars on GitHub - 1 maintainer
Top 2.3% on crates.io
swc_ecma_codegen_macros 2.0.2 💰
Macros for swc_ecma_codegen.
21 versions - Latest release: 9 months ago - 5 dependent packages - 1,083 dependent repositories - 6.68 million downloads total - 29,915 stars on GitHub - 2 maintainers
swc_plugin_testing 0.24.2 removed 💰
Base for swc plugins
34 versions - Latest release: 10 months ago - 37.6 thousand downloads total - 29,915 stars on GitHub - 2 maintainers
swc_par_iter 1.0.0 💰
Fork of rayon, with chili support
1 version - Latest release: about 1 year ago - 700 downloads total - 33,254 stars on GitHub - 2 maintainers
Top 3.7% on crates.io
preset_env_base 7.0.0 💰
Common logic for targetting vairous browsers
39 versions - Latest release: 2 months ago - 6 dependent packages - 401 dependent repositories - 1.16 million downloads total - 29,915 stars on GitHub - 2 maintainers
swc_allocator 4.0.1 💰
A thin wrapper for bumpalo
17 versions - Latest release: 9 months ago - 9.56 million downloads total - 29,915 stars on GitHub - 2 maintainers
Top 2.7% on crates.io
swc_visit_macros 0.5.13 💰
Visitor generator for stable rustc
28 versions - Latest release: over 1 year ago - 3 dependent packages - 1,232 dependent repositories - 8.26 million downloads total - 29,915 stars on GitHub - 2 maintainers
Related Keywords
babel 167 compiler 167 ecmascript 167 javascript 167 parser 167 rust 167 swc 167 typescript 167 typescript-compiler 167 typescript-parser 167 sourcemap 1 sourcemaps 1