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Use JSON for all code size tests
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‎.prettierignore

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src/lib/*.js
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src/audio_worklet.js
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src/Fetch.js
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src/IDBStore.js
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src/memoryprofiler.js
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src/modularize.js
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src/node_shell_read.js
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src/polyfill/bigint64array.js
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src/postamble*.js
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src/postlibrary.js
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src/preamble*.js
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src/proxy*.js
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src/runtime_*.js
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src/shell*.js
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src/source_map_support.js
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src/threadprofiler.js
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src/wasm_offset_converter.js
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src/wasm_worker.js
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src/wasm2js.js
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src/web_or_worker_shell_read.js

‎.vscode/c_cpp_properties.json

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{
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"configurations": [
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{
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"name": "Emscripten",
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"includePath": [
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"${workspaceFolder}/**"
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],
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"defines": [
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"_DEBUG",
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"UNICODE",
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"_UNICODE"
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],
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"windowsSdkVersion": "10.0.26100.0",
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"compilerPath": "D:\\emsdk\\upstream\\emscripten\\emcc.bat",
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"cStandard": "c17",
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"cppStandard": "c++17",
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"intelliSenseMode": "windows-clang-x86"
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}
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],
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"version": 4
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}

‎.vscode/launch.json

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{
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// Use IntelliSense to learn about possible attributes.
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// Hover to view descriptions of existing attributes.
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// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
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"version": "0.2.0",
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"configurations": [
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{
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"type": "node",
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"request": "launch",
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"name": "Launch Program",
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"skipFiles": [
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"<node_internals>/**"
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],
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"program": "${workspaceFolder}\\out\\test\\test_embind_val_basics.js"
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}
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]
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}

‎.vscode/settings.json

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{
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"codeQL.createQuery.qlPackLocation": "d:\\emscripten",
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"typescript.tsdk": "node_modules\\typescript\\lib",
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"files.associations": {
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"*.sls": "yaml",
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"*.gyp": "gyp",
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".eslintrc": "yaml",
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"*.c++": "cpp",
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"DEPS": "python",
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".emscripten": "python",
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"*.Makefile": "makefile",
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"Makefile2": "makefile",
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"*.dw": "llvm",
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"*.json": "jsonc",
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"*.html": "html",
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"*.at": "shellscript",
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"*.la": "ini",
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"*.toml": "toml",
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"*.ejs": "ejs",
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".clang-tidy": "yaml",
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"*.wsb": "xml",
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"*.site": "shellscript",
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"*.njk": "nunjucks",
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"*.wast": "wat",
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"nuget.config": "xml",
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"*.csproj": "xml",
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"*.verified.txt": "json5",
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"*.props": "xml",
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"*.mir": "txt",
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".wslconfig": "ini",
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"*.wcs": "fits",
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"*.gpx": "xml",
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"*.make": "makefile",
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"algorithm": "cpp",
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"chrono": "cpp",
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"limits": "cpp",
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"random": "cpp",
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"utility": "cpp",
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"valarray": "cpp",
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"xutility": "cpp",
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"xstring": "cpp",
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"any": "cpp",
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"array": "cpp",
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"atomic": "cpp",
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"barrier": "cpp",
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"bit": "cpp",
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"bitset": "cpp",
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"cctype": "cpp",
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"cfenv": "cpp",
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"charconv": "cpp",
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"cinttypes": "cpp",
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"clocale": "cpp",
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"cmath": "cpp",
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"codecvt": "cpp",
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"compare": "cpp",
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"complex": "cpp",
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"concepts": "cpp",
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"condition_variable": "cpp",
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"coroutine": "cpp",
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"cstdarg": "cpp",
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"cstddef": "cpp",
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"cstdint": "cpp",
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"cstdio": "cpp",
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"cstdlib": "cpp",
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"cstring": "cpp",
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"ctime": "cpp",
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"cwchar": "cpp",
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"cwctype": "cpp",
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"deque": "cpp",
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"exception": "cpp",
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"execution": "cpp",
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"expected": "cpp",
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"filesystem": "cpp",
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"format": "cpp",
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"forward_list": "cpp",
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"fstream": "cpp",
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"functional": "cpp",
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"future": "cpp",
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"initializer_list": "cpp",
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"iomanip": "cpp",
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"ios": "cpp",
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"iosfwd": "cpp",
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"iostream": "cpp",
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"istream": "cpp",
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"iterator": "cpp",
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"list": "cpp",
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"locale": "cpp",
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"map": "cpp",
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"memory": "cpp",
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"memory_resource": "cpp",
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"mutex": "cpp",
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"new": "cpp",
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"numeric": "cpp",
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"optional": "cpp",
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"ostream": "cpp",
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"print": "cpp",
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"queue": "cpp",
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"ranges": "cpp",
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"ratio": "cpp",
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"regex": "cpp",
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"set": "cpp",
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"shared_mutex": "cpp",
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"span": "cpp",
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"sstream": "cpp",
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"stack": "cpp",
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"stdexcept": "cpp",
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"stop_token": "cpp",
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"streambuf": "cpp",
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"string": "cpp",
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"strstream": "cpp",
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"system_error": "cpp",
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"thread": "cpp",
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"tuple": "cpp",
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"type_traits": "cpp",
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"typeinfo": "cpp",
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"unordered_map": "cpp",
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"unordered_set": "cpp",
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"variant": "cpp",
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"vector": "cpp",
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"xfacet": "cpp",
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"xhash": "cpp",
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"xiosbase": "cpp",
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"xlocale": "cpp",
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"xlocbuf": "cpp",
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"xlocinfo": "cpp",
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"xlocmes": "cpp",
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"xlocmon": "cpp",
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"xlocnum": "cpp",
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"xloctime": "cpp",
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"xmemory": "cpp",
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"xtr1common": "cpp",
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"xtree": "cpp",
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"__bit_reference": "cpp",
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"__hash_table": "cpp",
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"__locale": "cpp",
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"__node_handle": "cpp",
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"__split_buffer": "cpp",
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"__tree": "cpp",
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"__verbose_abort": "cpp",
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"string_view": "cpp",
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"__config": "c",
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"stdlib.h": "c",
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"threading.h": "c",
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"atomic.h": "c",
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"threading_legacy.h": "c",
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"eventloop.h": "c",
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"*.inc": "c",
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"em_js.h": "c",
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"em_types.h": "c",
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"emscripten_internal.h": "c",
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"csignal": "cpp",
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"wire.h": "c"
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}
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}

‎ast-grep.yml

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id: prefer-arrow-function
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language: javascript
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rule:
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any:
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- pattern: |
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$PROP: function ($$$ARGS) => {
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$$$BODY
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}
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fix: |
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$PROP($$$ARGS) {
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$$$BODY
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}
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files:
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- 'src/*js'
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- 'src/lib/*js'

‎embind_test.wasm

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Binary file not shown.

‎system/lib/libc/emscripten_table.c

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#include <assert.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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static const char STATIC_HEADER[] = {
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'\0',
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'a',
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's',
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'm', // magic ("\0asm")
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0x01,
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0x00,
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0x00,
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0x00, // version: 1
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0x01, // Type section code
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};
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static const char STATIC_SECTIONS[] = {
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0x02,
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0x07, // import section
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// (import "e" "f" (func 0 (type 0)))
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0x01,
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0x01,
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'e',
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0x01,
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'f',
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0x00,
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0x00,
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0x07,
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0x05, // export section
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// (export "f" (func 0 (type 0)))
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0x01,
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0x01,
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'f',
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0x00,
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0x00,
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};
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typedef struct {
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char* data;
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size_t size;
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} wasm_module_t;
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static void
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wasm_module_append(wasm_module_t* target, const char* bytes, size_t count) {
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char* pos = target->data + target->size;
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target->data = realloc(target->data, target->size += count);
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memcpy(pos, bytes, count);
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}
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static void wasm_module_append_byte(wasm_module_t* target, char byte) {
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wasm_module_append(target, &byte, 1);
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}
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static char* uleb128_reserve(wasm_module_t* target) {
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char* pos = target->data + target->size;
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target->data = realloc(target->data, target->size += 2);
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return pos;
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}
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static void uleb128_encode(uint32_t n, char* target) {
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assert(n < 16384);
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target[0] = (n % 128) | 128;
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target[1] = n >> 7;
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}
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static void generate_func_type(char* sig, wasm_module_t* target) {
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char *sig_end = strchr(sig, '\0');
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char ret_count = 1;
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if (sig[0] == 'v') {
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ret_count = 0; // void, skip from signature remapping
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sig++;
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}
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// Remap the signature characters to their corresponding type codes
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for (char *sig_cur = sig; sig_cur < sig_end; sig_cur++) {
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switch (*sig_cur) {
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case 'i':
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*sig_cur = 0x7f; // i32
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break;
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case 'j':
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*sig_cur = 0x7e; // i64
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break;
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case 'f':
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*sig_cur = 0x7d; // f32
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break;
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case 'd':
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*sig_cur = 0x7c; // f64
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break;
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case 'e':
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*sig_cur = 0x6f; // externref
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break;
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case 'p':
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#if __wasm64__
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*sig_cur = 0x7e; // i64
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#else
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*sig_cur = 0x7f; // i32
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#endif
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break;
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default:
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assert(0); // Invalid type code
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break;
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}
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}
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wasm_module_append_byte(target, 0x60); // form: func
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char *sig_params = sig + ret_count;
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size_t param_count = sig_end - sig_params;
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uleb128_encode(param_count, uleb128_reserve(target));
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wasm_module_append(target, sig_params, param_count);
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wasm_module_append_byte(target, ret_count);
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wasm_module_append(target, sig, ret_count);
116+
}
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wasm_module_t convert_js_function_to_wasm(char* sig) {
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// Build the complete module
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wasm_module_t result = {NULL, 0};
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// Copy static header
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wasm_module_append(&result, STATIC_HEADER, sizeof(STATIC_HEADER));
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// Reserve space for the type section length
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char* type_section_length = uleb128_reserve(&result);
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size_t type_section_start = result.size;
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// Fill the type section
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wasm_module_append_byte(&result, 0x01); // Count: 1
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generate_func_type(sig, &result);
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// Write the overall length of the type section
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uleb128_encode(result.size - type_section_start, type_section_length);
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// Copy static sections
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wasm_module_append(&result, STATIC_SECTIONS, sizeof(STATIC_SECTIONS));
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return result;
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}

‎test/browser/test_small_js_flags.js.size

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