feat(@clack/core,@clack/prompts): Multiline text input

[MacFJA]

Add a new prompt: MultiLinePrompt and its rendering multiline

Changes

Added to @clack/core

• Option to change the key that submit a prompt (default value is return to keep retro-compatibility)
• A new event that send the raw char and key
• A new util function (isSameKey) to test if two key are the same (with ctrl, meta, shift included in the check)
• A new prompt MultiLinePrompt

Added to @clack/prompts

• A new prompt function multiline

Difficulties and workaround

Issue: The return key is used to submit the prompt and is hardcoded, so impossible to insert new line
Solution: Make the submit key configurable (see: packages/core/src/prompts/prompt.ts:{22,53,210})

Issue: The default cursor management use vim mapping, so when pressing letter k, j, h or l to add those letter, the cursor also moves.
Solution: Re-implementing of the cursor management without vim mapping (see packages/core/src/prompts/multi-line.ts:29)

Issue: The event key lower the inputted char, so uppercased char are never displayed
Solution: Create a new event rawKey to send the untouched value (also used for the cursor management)

---

• This PR (except if I miss something) don't create incompatibility with existing usage of the library (as it add new feature, and core changes have default value that behave as it was before)
• This PR fix the issue [Feature Request] Multiline text #25

[changeset-bot]

🦋 Changeset detected

Latest commit: 61486ae

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
@clack/prompts	Minor
@clack/core	Minor

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[pkg-pr-new]

• @example/basic

• @example/changesets

  npm i https://pkg.pr.new/@clack/core@240
  

  npm i https://pkg.pr.new/@clack/prompts@240
  

commit: 61486ae

[natemoo-re]

Wow great stuff, thank you for contributing!

[deadcoder0904]

I'd love if this is merged. Its annoying to do multi-line with such a beautiful library. Only thing missing imo.

[dreyfus92]

overall looks good @43081j, can you push a changeset?

[dreyfus92]

thank you @43081j 🎉