Categorize reported errors.

[ikarienator]

For example:

• Structural Context (SC)
• Duplication Not Allowed (DNA)
• Restricted Names (RN)
• Incorrect Type (IT)
• Nullability (N)

[ikarienator]

• Structural Context 543: ReturnStatement must be nested within a FunctionExpression or FunctionDeclaration node
• Structural Context 175: BreakStatement must have an IterationStatement or SwitchStatement as an ancestor
• Structural Context 180: labelled BreakStatement must have a matching LabeledStatement ancestor
• Structural Context 231: ContinueStatement must have an IterationStatement as an ancestor
• Structural Context 236: labelled ContinueStatement must have a matching LabeledStatement ancestor
• Structural Context 377: IfStatement with null alternate must not be the consequent of an IfStatement with a non-null alternate
• Duplication 393: LabeledStatement must not be nested within a LabeledStatement with the same label
• Duplication 514: duplicate data property in object literal not allowed in strict mode
• Duplication: duplicate parameter names in function decl/expr not allowed in strict mode
• Restricted Names: In strict mode, eval and arguments cannot appear at:
  • function parameters
  • setter parameters
  • AssignmentExpression.left
  • function names
  • catch variable
  • variable declarations
• Restricted Names 363: Identifier name member must a valid IdentifierName
• Restricted Names 365: Identifier name member must not be a ReservedWord
• Restricted Names 365: Identifier name member must not be a FutureReservedWord
• Incorrect Type 415: numeric Literal nodes must not be NaN
• Incorrect Type 418: numeric Literal nodes must not be negative
• Incorrect Type 420: numeric Literal nodes must be finite
• Incorrect Type 642: TryStatement must have a non-null handler member or a non-null finalizer member
• Incorrect Type 452: static MemberExpression property member must have a valid IdentifierName name member
• Incorrect Type 556: SequenceExpression expressions member length must be >= 2
• Incorrect Type 596: SwitchStatement cases member length must be >= 1
• Incorrect Type 606: SwitchStatement cases member must contain no more than one SwitchCase with a null test member
• Incorrect Type 668: VariableDeclaration declarations member must be non-empty
• Incorrect Type: with Statement in strict mode

Strict Mode related:

• Duplication 514: duplicate data property in object literal not allowed in strict mode
• Duplication: duplicate parameter names in function decl/expr not allowed in strict mode
• Restricted Names: In strict mode, eval and arguments cannot appear at: ...
• Restricted Names 365: Identifier name member must not be a FutureReservedWord
• Incorrect Type: with Statement in strict mode

[anko]

@ikarienator What do the numbers mean? Are they intended to be unique identifiers for the specific error types?

[michaelficarra]

As I understood it, they are just unique numbers, which would be sufficient for most purposes. Maybe @ikarienator meant to imply some sort of categorisation?