microsoft / microsoft/TypeScript
Line break in module declaration causes compile time error
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Description
TypeScript Version: 2.0.3
A line break in the declaration of a module causes a compile time error.
This could either be that the language specification isn't clear that this is illegal or a bug.
Code
// Example declaration with line break
declare module
my.very.long.name.foo.bar.baz.able.baker {}
Expected behavior:
I don't see anything in the language specification that would make this a compile time error, so I would expect the statement to work as if declaration was all on one line, ie:
// Example declaration with line break
declare module my.very.long.name.foo.bar.baz.able.baker {}
Actual behavior:
A compile time error, in particular: (1, 9): error TS1005: ';' expected.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by compiling the provided TypeScript snippet with the line break after declare module and compare it with the one-line version. Trace the parser handling of module declarations; done means the multiline declaration compiles without TS1005 while existing behavior remains intact.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- typescript
- Domain
- compilers
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Clearly specified
- Newbie friendliness
- 45/100