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[Bug] SyntaxError: Identifier '_class' has already been declared
Bug Report
Bug Summary
Getting SyntaxError: Identifier '_class' has already been declared after adding a class declaration
Steps To Reproduce
- Open the built-in tutorial excercises
- Add a class declaration to the excercise source file
- Run DBUX
Expected behavior
Not crash.
Actual behavior
Crashes with an error SyntaxError: Identifier '_class' has already been declared.
Attachments
Relevant Code
class Foo {}
Dbux Output Log
[Dbux ActionGroupType] Missing UserActionTypes in groupByActionType: PracticeSessionChanged, TestRunFinished, NewExerciseProgress, ExerciseProgressChanged, RunFile, RuntimeServerStatusChanged, ShowHelp, SelectTraceById, TreeViewOther, TreeViewCollapseChangeOther, TDValueRender, TDExecutionsGroupModeChanged, TDTraceUse, TDDebugUse, TDAsyncUse, TDAsyncGoToForkParent, TDAsyncGoToScheduler, DataFlowViewSearchModeChanged, DataFlowViewFilterModeChanged, DataFlowSelectTrace, DecorationVisibilityChanged, NavBarButtonsVisibilityChanged, ErrorLogNotificationVisibilityChanged, GlobalDebugAppUse, GlobalConsoleUse, GlobalProgramsUse, GlobalPackageSortModeChanged, SearchModeChanged, CallGraphVisibilityChanged, CallGraphGraphDocumentModeChanged, AsyncCallGraphTrace, AsyncCallGraphSchedulerTrace, AsyncCallGraphValueTrace, AsyncCallGraphError, StopProjectRunner, ProjectViewsVisibilityChanged, CheckSystem, ShowOutputChannel, ShowApplicationEntryFile, OpenWebsite, ShowExerciseIntroductionView, NewApplications, PathwaysVisibilityChanged, ProjectViewListModeChanged
[Dbux dbux-code] Starting Dbux v0.7.9 (mode=production)...
[Dbux projectControl] Initializing dbux-projects: projectsRoot = "/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/dbux_projects", dependencyRoot = "/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9", samplesRoot = "/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/samples"
[Dbux PracticeManager] getDbuxPath(), relativePath='@dbux/cli/bin/dbux.js', getDbuxRoot()='/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9', config={"dependencyRoot":"/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9","projectsRoot":"/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/dbux_projects","samplesRoot":"/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/samples","dbuxLanguage":"en"}
[Dbux installUtil] Checking library dependencies. Found 0 missing:
[Dbux TraceDecoConfig] Missing decoration config for trace types: BranchStatement, BranchExpression, BranchPush, BranchPop, BranchDecision, ResumeAsync, Finally, Catch, TryExit, FinallyExit, Yield, ResumeGen, PatternAssignment, PatternWriteVar, PatternWriteAndDeclareVar, PatternWriteME, Meta
[Dbux exerciseProgresses] entry does not have `_id` prop (only reports once): [object Object]
[Dbux Project todomvc-es6] [reloadExercises] found 11 in "undefined"
[Dbux Project node-fetch] [reloadExercises] found 1 in "undefined"
[Dbux Project javascript-algorithms] [reloadExercises] found 3 in "undefined"
[Dbux Project getting-started] [reloadExercises] found 11 in "undefined"
[Dbux Project express] [reloadExercises] found 22 in "undefined"
[Dbux Project async-js] [reloadExercises] found 2 in "undefined"
[Dbux Project 2048] [reloadExercises] found 4 in "undefined"
[Dbux PracticeManager] Cannot find exercise of id or name:express#20 in chapter#3 (express). Make sure exerciseIds in "exerciseList.json" are correct.
[Dbux PracticeManager] Cannot find exercise of id or name:express#21 in chapter#3 (express). Make sure exerciseIds in "exerciseList.json" are correct.
[Dbux Project javascript-algorithms] [reloadExercises] found 313 in "javascript-algorithms-all"
[Dbux Call Graph HostWrapper] client connected. - Starting host...
[Dbux Call Graph] silenced postMessage after Host shutdown: [{"messageType":2,"componentId":32,"commandName":"_publicInternal.dispose","args":[],"callId":47},{"messageType":2,"componentId":31,"commandName":"_publicInternal.dispose","args":[],"callId":48},{"messageType":2,"componentId":30,"commandName":"_publicInternal.dispose","args":[],"callId":49},{"messageType":2,"componentId":29,"commandName":"_publicInternal.dispose","args":[],"callId":50},{"messageType":2,"componentId":28,"commandName":"_publicInternal.dispose","args":[],"callId":51},{"messageType":2,"componentId":27,"commandName":"_publicInternal.dispose","args":[],"callId":52},{"messageType":2,"componentId":26,"commandName":"_publicInternal.dispose","args":[],"callId":53},{"messageType":2,"componentId":25,"commandName":"_publicInternal.dispose","args":[],"callId":54},{"messageType":2,"componentId":24,"commandName":"_publicInternal.dispose","args":[],"callId":55},{"messageType":2,"componentId":23,"commandName":"_publicInternal.dispose","args":[],"callId":56},{"messageType":2,"componentId":22,"commandName":"_publicInternal.dispose","args":[],"callId":57},{"messageType":2,"componentId":21,"commandName":"_publicInternal.dispose","args":[],"callId":58},{"messageType":2,"componentId":20,"commandName":"_publicInternal.dispose","args":[],"callId":59},{"messageType":2,"componentId":19,"commandName":"_publicInternal.dispose","args":[],"callId":60},{"messageType":2,"componentId":18,"commandName":"_publicInternal.dispose","args":[],"callId":61},{"messageType":2,"componentId":17,"commandName":"_publicInternal.dispose","args":[],"callId":62},{"messageType":2,"componentId":16,"commandName":"_publicInternal.dispose","args":[],"callId":63},{"messageType":2,"componentId":15,"commandName":"_publicInternal.dispose","args":[],"callId":64},{"messageType":2,"componentId":14,"commandName":"_publicInternal.dispose","args":[],"callId":65},{"messageType":2,"componentId":13,"commandName":"_publicInternal.dispose","args":[],"callId":66},{"messageType":2,"componentId":12,"commandName":"_publicInternal.dispose","args":[],"callId":67},{"messageType":2,"componentId":11,"commandName":"_publicInternal.dispose","args":[],"callId":68},{"messageType":2,"componentId":10,"commandName":"_publicInternal.dispose","args":[],"callId":69},{"messageType":2,"componentId":9,"commandName":"_publicInternal.dispose","args":[],"callId":70},{"messageType":2,"componentId":8,"commandName":"_publicInternal.dispose","args":[],"callId":71},{"messageType":2,"componentId":7,"commandName":"_publicInternal.dispose","args":[],"callId":72},{"messageType":2,"componentId":6,"commandName":"_publicInternal.dispose","args":[],"callId":73},{"messageType":2,"componentId":5,"commandName":"_publicInternal.dispose","args":[],"callId":74},{"messageType":2,"componentId":4,"commandName":"_publicInternal.dispose","args":[],"callId":75},{"messageType":2,"componentId":33,"commandName":"_publicInternal.dispose","args":[],"callId":76},{"messageType":2,"componentId":3,"commandName":"_publicInternal.dispose","args":[],"callId":77},{"messageType":2,"componentId":2,"commandName":"_publicInternal.dispose","args":[],"callId":78},{"messageType":2,"componentId":1,"commandName":"_publicInternal.dispose","args":[],"callId":79}]
[Dbux installUtil] Checking library dependencies. Found 0 missing:
[Dbux exec] > $ "node" --version
[Dbux exec] ("node" EXIT: code=0, signal=null)
[Dbux checkSystem] checkSystem() result: Dbux requires the following programs to be installed and available on your system in order to run smoothly. Please make sure, you have all of them installed.
✓ shell
found at "/bin/bash"
✓ node
found at "/Users/dmaretskyi/.nodenv/shims/node" (v16.17.1 satisfies 16)
✓ npm
found at "/Users/dmaretskyi/.nodenv/shims/npm"
SUCCESS! All system dependencies seem to be in order.
[Dbux net/listener] server listening on port :3374...
[Dbux PracticeManager] getDbuxPath(), relativePath='@dbux/cli/dist/linkOwnDependencies.js', getDbuxRoot()='/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9', config={"dependencyRoot":"/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9","projectsRoot":"/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/dbux_projects","samplesRoot":"/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/samples","dbuxLanguage":"en"}
[Dbux PracticeManager] getDbuxPath(), relativePath='@dbux/cli/bin/dbux.js', getDbuxRoot()='/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9', config={"dependencyRoot":"/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9","projectsRoot":"/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/dbux_projects","samplesRoot":"/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/samples","dbuxLanguage":"en"}
Dbux Runtime (Console) Log
The default interactive shell is now zsh.
To update your account to use zsh, please run `chsh -s /bin/zsh`.
For more details, please visit https://support.apple.com/kb/HT208050.
"node" --enable-source-maps --stack-trace-limit=10bash-3.2$ "node" --enable-source-maps --stack-trace-limit=1000 --enable-source-maps -r /Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/node_modules/@dbux/cli/dist/linkOwnDependencies.js "/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/node_modules/@dbux/cli/bin/dbux.js" run --esnext --pw=.* "/Users/dmaretskyi/.vscode/extensions/domi.LongestWordLength/for-bad.js" -- ting-started/find
[Dbux] run: /Users/dmaretskyi/.nodenv/versions/16.17.1/bin/node /Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/dbux_projects/getting-started/findLongestWordLength/for-bad.js
[Dbux] [moduleFilter] REGISTER ~/.vscode/extensions/domi.dbux-code-0.7.9/dbux_projects/getting-started/findLongestWordLength/for-bad.js (file)
[@babel/register] cacheRoot=/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/dbux_projects/getting-started, cacheDir=/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/dbux_projects/getting-started/node_modules/.cache/@babel/register
[@babel/register] Cache miss [FileModified] for "/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/dbux_projects/getting-started/findLongestWordLength/for-bad.js"
[@dbux/cli] command failed
[Caused By] SyntaxError: Identifier '_class' has already been declared
at Object.compileFunction (node:vm:360:18)
... 21 lines matching cause stack trace ...
at node:internal/main/run_main_module:17:47 {
name: 'NestedError',
cause: SyntaxError: Identifier '_class' has already been declared
at Object.compileFunction (node:vm:360:18)
at wrapSafe (node:internal/modules/cjs/loader:1055:15)
at Module._compile (node:internal/modules/cjs/loader:1090:27)
at Module._compile (/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/node_modules/pirates/lib/index.js:119:24)
at Module._extensions..js (node:internal/modules/cjs/loader:1180:10)
at Object.newLoader [as .js] (/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/node_modules/pirates/lib/index.js:123:7)
at Module.load (node:internal/modules/cjs/loader:1004:32)
at Function.Module._load (node:internal/modules/cjs/loader:839:12)
at Module.require (node:internal/modules/cjs/loader:1028:19)
at require (node:internal/modules/cjs/helpers:102:18)
at requireDynamic (/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/node_modules/@dbux/cli/dist/commands/run.js:1:9685)
at /Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/node_modules/@dbux/cli/dist/commands/run.js:1:7593
at Object.handler (/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/node_modules/@dbux/cli/dist/commands/run.js:1:8177)
at Object.runCommand (/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/node_modules/yargs/build/index.cjs:446:48)
at Object.parseArgs [as _parseArgs] (/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/node_modules/yargs/build/index.cjs:2697:57)
at Object.get [as argv] (/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/node_modules/yargs/build/index.cjs:2651:25)
at Object.<anonymous> (/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/node_modules/@dbux/cli/bin/dbux.js:22:3)
at Module._compile (node:internal/modules/cjs/loader:1126:14)
at Object.Module._extensions..js (node:internal/modules/cjs/loader:1180:10)
at Module.load (node:internal/modules/cjs/loader:1004:32)
at Function.Module._load (node:internal/modules/cjs/loader:839:12)
at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12)
at node:internal/main/run_main_module:17:47
}
[@dbux/cli] waiting 20s for process to finish...
exiting...
Trace: [Dbux [@dbux/runtime]] NOTE: process.exit(-1) was called by the application.
at E (/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/node_modules/@dbux/runtime/dist/index-node.js:2:4345)
at /Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/node_modules/@dbux/runtime/dist/index-node.js:2:3652
at process.exit (/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/node_modules/@dbux/runtime/dist/index-node.js:2:437447)
at /Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/node_modules/@dbux/cli/dist/commands/run.js:1:8544
[Dbux [@dbux/runtime]] Dbux is trying to delay shutdown (process.exit) by 60s...
[Dbux [@dbux/runtime]] exiting now.
Screenshots
System (please complete the following information):
- OS: macos
- Dbux VSCode Extension version: 0.7.9
- Affected Dbux Packages (+ version numbers):
➜ domi.dbux-code-0.7.9 npm list
[email protected] /Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9
├── @babel/[email protected]
├── @dbux/[email protected]
├── @dbux/[email protected]
├── @dbux/[email protected]
├── @dbux/[email protected]
├── @dbux/[email protected]
├── @dbux/[email protected]
├── @dbux/[email protected]
├── @dbux/[email protected]
├── @dbux/[email protected]
├── @types/[email protected]
├── @types/[email protected]
├── @types/[email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
└── [email protected]
-
"@babel/plugin-proposal-class-properties": "^7.18.6" -
node 16
Additional context
After installing the vscode extension I was getting an error about @babel/plugin-proposal-class-properties package missing. So I've installed it manually in the tutorial excercises workspace:
"@babel/plugin-proposal-class-properties": "^7.18.6"
I've also dumped the source after transformation with the dbux plugin:
var _defineProperty = require("@babel/runtime/helpers/defineProperty");
var _dbux = _dbux_init(
(typeof __dbux__ !== "undefined" && __dbux__) || require("@dbux/runtime")
);
var _cid = _dbux.getProgramContextId();
var _al = _dbux.getArgLength,
_af = _dbux.arrayFrom,
_uot = _dbux.unitOfType,
_diph = _dbux.DefaultInitializerPlaceholder,
_pI = _dbux.pushImmediate,
_pF = _dbux.popFunction,
_pFI = _dbux.popFunctionInterruptable,
_par = _dbux.registerParams,
_tr = _dbux.traceReturn,
_tra = _dbux.traceReturnAsync,
_tt = _dbux.traceThrow,
_tid = _dbux.newTraceId,
_td = _dbux.traceDeclaration,
_te = _dbux.traceExpression,
_tev = _dbux.traceExpressionVar,
_twv = _dbux.traceWriteVar,
_tct = _dbux.traceCatch,
_tctI = _dbux.traceCatchInterruptable,
_tf = _dbux.traceFinally,
_tfI = _dbux.traceFinallyInterruptable,
_tme = _dbux.traceExpressionME,
_tmeo = _dbux.traceExpressionMEOptional,
_twme = _dbux.traceWriteME,
_tdme = _dbux.traceDeleteME,
_tue = _dbux.traceUpdateExpressionVar,
_tume = _dbux.traceUpdateExpressionME,
_bce = _dbux.traceBCE,
_a = _dbux.traceArg,
_tsa = _dbux.traceSpreadArg,
_tcr = _dbux.traceCallResult,
_tae = _dbux.traceArrayExpression,
_toe = _dbux.traceObjectExpression,
_tfi = _dbux.traceForIn,
_tc = _dbux.traceClass,
_ti = _dbux.traceInstance,
_aw = _dbux.preAwait,
_aw2 = _dbux.wrapAwait,
_aw3 = _dbux.postAwait,
_yi = _dbux.preYield,
_yi2 = _dbux.wrapYield,
_yi3 = _dbux.postYield,
_tp = _dbux.tracePattern,
_apu = _dbux.addPurpose;
try {
var _class;
var _t3_, _t4_;
class _class {
constructor() {
_ti(this, (_t3_ = _tid(3)), []);
}
}
_class = _class;
_defineProperty(Foo, "_dbux_class", function () {
_tc(_class, (_t4_ = _tid(4)), [], []);
});
_class._dbux_class(), delete _class._dbux_class;
_dbux.t(5);
} finally {
_dbux.popProgram();
}
function _dbux_init(dbuxRuntime) {
if (!dbuxRuntime.initProgram) {
throw new Error(
'[@dbux/runtime] "initProgram" unavailable in "for-bad.js"'
);
}
return dbuxRuntime.initProgram(
{
program: {
_staticId: 1,
loc: {
start: { line: 1, column: 0, index: 0 },
end: { line: 2, column: 0, index: 14 },
},
type: 1,
name: "for-bad.js",
displayName: "for-bad.js",
fileName: "for-bad.js",
filePath:
"/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/dbux_projects/getting-started/findLongestWordLength/for-bad.js",
programIndex: 1,
},
contexts: [
{
_staticId: 1,
loc: {
start: { line: 1, column: 0, index: 0 },
end: { line: 2, column: 0, index: 14 },
},
type: 1,
name: "for-bad.js",
displayName: "for-bad.js",
fileName: "for-bad.js",
filePath:
"/Users/dmaretskyi/.vscode/extensions/domi.dbux-code-0.7.9/dbux_projects/getting-started/findLongestWordLength/for-bad.js",
programIndex: 1,
},
],
traces: [
{
loc: {
start: { line: 1, column: 0, index: 0 },
end: { line: 1, column: 0, index: 0 },
},
_traceId: 1,
_staticContextId: 1,
type: 1,
},
{
loc: {
start: { line: 2, column: 0, index: 14 },
end: { line: 2, column: 0, index: 14 },
},
_traceId: 2,
_staticContextId: 1,
type: 2,
},
{
displayName: "{}",
loc: {
start: { line: 1, column: 10, index: 10 },
end: { line: 1, column: 12, index: 12 },
},
_traceId: 3,
_staticContextId: 1,
type: 45,
data: { privateMethods: [] },
dataNode: { isNew: true },
},
{
displayName: "class Foo {}",
loc: {
start: { line: 1, column: 0, index: 0 },
end: { line: 1, column: 12, index: 12 },
},
_traceId: 4,
_staticContextId: 1,
type: 43,
data: { name: "Foo", staticMethods: [], publicMethods: [] },
dataNode: { isNew: true },
},
{
loc: {
start: { line: 2, column: 0, index: 14 },
end: { line: 2, column: 0, index: 14 },
},
_traceId: 5,
_staticContextId: 1,
type: 22,
},
],
loops: [],
},
{}
);
}
Elimiminating the usage of @babel/plugin-proposal-class-properties seems to fix the issue for me