java.lang.IllegalStateException: 'yield' expression is not within a generator function. · Issue #3897 · google/closure-compiler (original) (raw)

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Description

I tried to transpile down the vscode frontend from es2020 to es2015 in order to use it on a machine that does not support newer browsers. Rare use case but should work in a bug free world. :)
For that, I grabbed closure-compiler-v20211107.jar and used it like this:

/usr/lib/code-server/vendor/modules/code-oss-dev/out/vs/workbench# closure-compiler --js workbench.web.api.js --js_output_file workbench.web.api.js --language_in ECMASCRIPT_2020 --language_out ECMASCRIPT_2015
java.lang.IllegalStateException: 'yield' expression is not within a generator function. Reference node:
YIELD 1461:4095  [length: 32] [source_file: workbench.web.api.js]
    CALL 1461:4095  [length: 26] [source_file: workbench.web.api.js]
        GETPROP createTerminal 1461:4095  [length: 14] [source_file: workbench.web.api.js]
            NAME L 1461:4095  [length: 4] [source_file: workbench.web.api.js]
        NAME E 1461:4095  [length: 1] [source_file: workbench.web.api.js]
        NAME M 1461:4095  [length: 1] [source_file: workbench.web.api.js]
        NAME J 1461:4095  [length: 1] [source_file: workbench.web.api.js]

 Parent node:
NAME la 1461:4095  [length: 40] [source_file: workbench.web.api.js] [constant_var_flags: 2]
    YIELD 1461:4095  [length: 32] [source_file: workbench.web.api.js]
        CALL 1461:4095  [length: 26] [source_file: workbench.web.api.js]
            GETPROP createTerminal 1461:4095  [length: 14] [source_file: workbench.web.api.js]
                NAME L 1461:4095  [length: 4] [source_file: workbench.web.api.js]
            NAME E 1461:4095  [length: 1] [source_file: workbench.web.api.js]
            NAME M 1461:4095  [length: 1] [source_file: workbench.web.api.js]
            NAME J 1461:4095  [length: 1] [source_file: workbench.web.api.js]

        at com.google.javascript.jscomp.AstValidator$1.handleViolation(AstValidator.java:86)
        at com.google.javascript.jscomp.AstValidator.violation(AstValidator.java:1995)
        at com.google.javascript.jscomp.AstValidator.validateYieldWithinGeneratorFunction(AstValidator.java:613)
        at com.google.javascript.jscomp.AstValidator.validateYield(AstValidator.java:607)
        at com.google.javascript.jscomp.AstValidator.validateExpression(AstValidator.java:440)
        at com.google.javascript.jscomp.AstValidator.validateNameDeclarationChild(AstValidator.java:1262)
        at com.google.javascript.jscomp.AstValidator.validateNameDeclarationHelper(AstValidator.java:1227)
        at com.google.javascript.jscomp.AstValidator.validateStatement(AstValidator.java:206)
        at com.google.javascript.jscomp.AstValidator.validateStatement(AstValidator.java:153)
        at com.google.javascript.jscomp.AstValidator.validateBlock(AstValidator.java:941)
        at com.google.javascript.jscomp.AstValidator.validateFunctionExpressionHelper(AstValidator.java:1052)
        at com.google.javascript.jscomp.AstValidator.validateFunctionExpression(AstValidator.java:1034)
        at com.google.javascript.jscomp.AstValidator.validateExpression(AstValidator.java:424)
        at com.google.javascript.jscomp.AstValidator.validateCall(AstValidator.java:1119)
        at com.google.javascript.jscomp.AstValidator.validateExpression(AstValidator.java:412)
        at com.google.javascript.jscomp.AstValidator.validateBinaryOp(AstValidator.java:1905)
        at com.google.javascript.jscomp.AstValidator.validateExpression(AstValidator.java:380)
        at com.google.javascript.jscomp.AstValidator.validateIf(AstValidator.java:1450)
        at com.google.javascript.jscomp.AstValidator.validateStatement(AstValidator.java:201)
        at com.google.javascript.jscomp.AstValidator.validateStatement(AstValidator.java:153)
        at com.google.javascript.jscomp.AstValidator.validateBlock(AstValidator.java:941)
        at com.google.javascript.jscomp.AstValidator.validateIf(AstValidator.java:1451)
        at com.google.javascript.jscomp.AstValidator.validateStatement(AstValidator.java:201)
        at com.google.javascript.jscomp.AstValidator.validateStatement(AstValidator.java:153)
        at com.google.javascript.jscomp.AstValidator.validateBlock(AstValidator.java:941)
        at com.google.javascript.jscomp.AstValidator.validateFunctionBody(AstValidator.java:1082)
        at com.google.javascript.jscomp.AstValidator.validateFunctionExpressionHelper(AstValidator.java:1058)
        at com.google.javascript.jscomp.AstValidator.validateFunctionExpression(AstValidator.java:1034)
        at com.google.javascript.jscomp.AstValidator.validateExpression(AstValidator.java:424)
        at com.google.javascript.jscomp.AstValidator.validatePseudoExpression(AstValidator.java:480)
        at com.google.javascript.jscomp.AstValidator.validateCall(AstValidator.java:1122)
        at com.google.javascript.jscomp.AstValidator.validateExpression(AstValidator.java:412)
        at com.google.javascript.jscomp.AstValidator.validateReturn(AstValidator.java:1467)
        at com.google.javascript.jscomp.AstValidator.validateStatement(AstValidator.java:212)
        at com.google.javascript.jscomp.AstValidator.validateStatement(AstValidator.java:153)
        at com.google.javascript.jscomp.AstValidator.validateBlock(AstValidator.java:941)
        at com.google.javascript.jscomp.AstValidator.validateFunctionBody(AstValidator.java:1082)
        at com.google.javascript.jscomp.AstValidator.validateFunctionExpressionHelper(AstValidator.java:1058)
        at com.google.javascript.jscomp.AstValidator.validateFunctionExpression(AstValidator.java:1034)
        at com.google.javascript.jscomp.AstValidator.validateMemberFunction(AstValidator.java:918)
        at com.google.javascript.jscomp.AstValidator.validateClassMember(AstValidator.java:877)
        at com.google.javascript.jscomp.AstValidator.validateClassMembers(AstValidator.java:867)
        at com.google.javascript.jscomp.AstValidator.validateClassHelper(AstValidator.java:861)
        at com.google.javascript.jscomp.AstValidator.validateClassDeclaration(AstValidator.java:833)
        at com.google.javascript.jscomp.AstValidator.validateStatement(AstValidator.java:231)
        at com.google.javascript.jscomp.AstValidator.validateStatement(AstValidator.java:153)
        at com.google.javascript.jscomp.AstValidator.validateBlock(AstValidator.java:941)
        at com.google.javascript.jscomp.AstValidator.validateFunctionBody(AstValidator.java:1082)
        at com.google.javascript.jscomp.AstValidator.validateFunctionExpressionHelper(AstValidator.java:1058)
        at com.google.javascript.jscomp.AstValidator.validateFunctionExpression(AstValidator.java:1034)
        at com.google.javascript.jscomp.AstValidator.validateExpression(AstValidator.java:424)
        at com.google.javascript.jscomp.AstValidator.validatePseudoExpression(AstValidator.java:480)
        at com.google.javascript.jscomp.AstValidator.validateCall(AstValidator.java:1122)
        at com.google.javascript.jscomp.AstValidator.validateExpression(AstValidator.java:412)
        at com.google.javascript.jscomp.AstValidator.validateExprStmt(AstValidator.java:1460)
        at com.google.javascript.jscomp.AstValidator.validateStatement(AstValidator.java:209)
        at com.google.javascript.jscomp.AstValidator.validateStatement(AstValidator.java:153)
        at com.google.javascript.jscomp.AstValidator.validateBlock(AstValidator.java:941)
        at com.google.javascript.jscomp.AstValidator.validateFunctionBody(AstValidator.java:1082)
        at com.google.javascript.jscomp.AstValidator.validateFunctionExpressionHelper(AstValidator.java:1058)
        at com.google.javascript.jscomp.AstValidator.validateFunctionExpression(AstValidator.java:1034)
        at com.google.javascript.jscomp.AstValidator.validateExpression(AstValidator.java:424)
        at com.google.javascript.jscomp.AstValidator.validatePropertyReferenceTarget(AstValidator.java:1662)
        at com.google.javascript.jscomp.AstValidator.validateGetProp(AstValidator.java:1644)
        at com.google.javascript.jscomp.AstValidator.validateExpression(AstValidator.java:392)
        at com.google.javascript.jscomp.AstValidator.validateCall(AstValidator.java:1119)
        at com.google.javascript.jscomp.AstValidator.validateExpression(AstValidator.java:412)
        at com.google.javascript.jscomp.AstValidator.validateExprStmt(AstValidator.java:1460)
        at com.google.javascript.jscomp.AstValidator.validateStatement(AstValidator.java:209)
        at com.google.javascript.jscomp.AstValidator.validateStatement(AstValidator.java:153)
        at com.google.javascript.jscomp.AstValidator.validateStatements(AstValidator.java:147)
        at com.google.javascript.jscomp.AstValidator.validateScript(AstValidator.java:136)
        at com.google.javascript.jscomp.AstValidator.validateCodeRoot(AstValidator.java:123)
        at com.google.javascript.jscomp.AstValidator.process(AstValidator.java:109)
        at com.google.javascript.jscomp.PhaseOptimizer$NamedPass.process(PhaseOptimizer.java:317)
        at com.google.javascript.jscomp.PhaseOptimizer.process(PhaseOptimizer.java:232)
        at com.google.javascript.jscomp.Compiler.performTranspilationAndOptimizations(Compiler.java:2573)
        at com.google.javascript.jscomp.Compiler.lambda$stage2Passes$5(Compiler.java:939)
        at com.google.javascript.jscomp.CompilerExecutor.lambda$runInCompilerThread$0(CompilerExecutor.java:101)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base/java.lang.Thread.run(Thread.java:833)

From this output, I cannot tell which part of the file causes this, I am sorry.
But you can reproduce it if you install code-server. This may help:
https://github.com/cdr/code-server/tree/v3.12.0/vendor