microsoft / microsoft/TypeScript

TypeScript's ecosystem of self-bundled typings does not work with npm

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Needs Proposal Suggestion
Dominant language
Go
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Description

When npm dependencies have same packages of different versions, tsc throws duplicate identifier errors. TypeScript's ecosystem of packages is weaker than npm, and does not have compatibility with npm. I believe this is a large problem. And this will be a popular problem because npm always install an exact version in resolving dependencies. For example, when depending a@^0.0.2 and a@^0.0.1 as another package's dependency, its project has a@0.0.1 and a@0.0.2. npm can resolve these different versions, but TypeScript cannot.

TypeScript Version:

1.9.0-dev.20160526

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

No files, tests, or entry points are named. Start by reproducing the duplicate identifier errors with npm-installed dependencies containing different versions of the same package and TypeScript 1.9.0-dev.20160526; done would mean those dependency versions can coexist without the reported errors.

Written by the indexing model from the issue text.

Assessment

Tech stack
node.js, typescript
Domain
compilers, devtools
Issue type
Bug
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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