Add formatDiagnostics utility #9689
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Background: we find that in every program where we type-check, we make a copy of this function to print the diagnostics that several TS apis return. |
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cc @evmar |
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thanks! |
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i am amusing you want this in TS 2.0, if so can you port this to release-2.0 as well. either ways it should be in the nightly today. |
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We actually have this function (or one very like it) in a few places inside our test harness, too. We should consolidate. |
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I was saying to Alex that we'd also like to be able to get the pretty On Wed, Jul 13, 2016 at 12:32 PM, Wesley Wigham notifications@github.com
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| const category = DiagnosticCategory[diagnostic.category].toLowerCase(); | ||
| output += `${ category } TS${ diagnostic.code }: ${ flattenDiagnosticMessageText(diagnostic.messageText, sys.newLine) }${ sys.newLine }`; |
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using sys.newLine is incorrect here since it can be used in environments where sys is not defined. instead it should use host.newLine()
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That was an existing bug in tsc.ts, then. Other code nearby uses sys as well. But I think your point is that this utility is likely useful in new contexts, not just current usage sites.
I'll send another PR to change it?
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tsc.ts is only ever used in environments where sys is defined (since it is the command line entry point for node's tsc.js and chakrahost's tsc.exe). utilities, however, is not.
Discussed with @mhegazy on slack here: https://angular-team.slack.com/archives/typescript/p1454534510000080