Prepack diagnostics

Prepack diagnostic messages provide details on why Prepack has failed to optimize something. Typically this is because of code that makes use of some environmental value that is not known to Prepack at compile time. The error messages provide more detail of the exact situation that led to such failures.

In general, a diagnostic message also points to the source code location of the expression or statement that causes the failure, a call stack for the execution that reached the error location, as well as information on how the unknown environmental value propagated to the failure location.

• PP0001 to be defined
• PP0002 might be an object with an unknown valueOf or toString method
• PP0003 might not be an object, hence the in/instanceof operator might throw a TypeError
• PP0004 might be an object that behaves badly for the in/instanceof operator
• PP0005 might not be a function
• PP0006 eval argument must be a known value
• PP0007 with object must be a known value
• PP0008 might be a symbol or an object with an unknown valueOf or toString or Symbol.toPrimitive method
  PP0009 unknown super class
  PP0010 unknown super class prototype
  PP0011 property key value is unknown
  PP0012 reference base value is unknown
  PP0013 for in loops over unknown objects is not yet supported
  PP0014 for of loops over unknown collections are not yet supported
  PP0015 unknown computed property name
  PP0016 global code may end abruptly
  PP0017 unfrozen object leaked before end of global code
  PP0018 module import may fail with an exception
  PP0019 an abstract value with the same name exists.
  PP0020 __optimizeReactComponentTree() React component tree (root/branch) failed
  PP0021 abstract function call inside try/catch
  PP0022 a class method incorrectly went through the serializeValue() code path
  PP0023 Program may terminate with exception
  PP0024 __optimizeReactComponentTree(rootComponent, config) has been called with invalid arguments
  PP0025 unable to evaluate "key" and "ref" on a ReactElement due to an abstract config passed to createElement
  PP0026 mutating an object with unknown properties, after some of those properties have already been used, is not yet supported
  PP0027 case block containing a throw, return or continue is not yet supported
  PP0028 toString or valueOf might return either an object or primitive
  PP0029 the implies counter has exceeded the maximum value when trying to simplify abstract values
  PP0030 unknown property access might need to invoke a getter/setter
  PP0031 property access on unknown object
  PP0032 prototype access on unknown object
  PP0033 value passed to __optimize is not valid javascript function or React root component
  PP0034 break or continue with target cannot be guarded by abstract condition
  PP0035 array reduce with initial value is not supported

PP1001 additional function not defined in the global object
PP1002 optimized function may terminate abruptly
PP1003 property write conflicts with write in optimized function
PP1004 syntax error
PP1005 optimized function has parameters that are not yet supported

PP8000 Result of Math.random() is made deterministic via a fixed mathRandomSeed

PP9000 serializer limitation