microsoft / microsoft/TypeScript

Codefix for implicit-any 'this' in function

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Domain: LS: Quick Fixes Experience Enhancement Suggestion
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Description

TypeScript Version: 3.1.0-dev.20180813

Code

function f() {
    this.x;
}

Expected behavior:

Codefix to add this: any as a first parameter to f.
In situations where this is valid outside of the function (e.g. inside a class method), codefix to convert to const f = () => { ... } and hoist to the top of its scope if necessary.

Actual behavior:

No codefix.

Contributor guide

Open the contributing guide

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

Start by reproducing the implicit-any this example from the issue in TypeScript's language-service codefix flow. Compare the requested this: any behavior with the class-method case and verify both expected outcomes before considering the issue complete; no file or test path is named in the report.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript
Domain
compilers
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
32/100

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