Monaco Editor: Normalize Hex code

[hiddenest]

Describe the bug

Monaco editor returns an error while using github-light theme by @shikijs/monaco.

Uncaught Error: Illegal value for token color: #fff

Error: Illegal value for token color: #fff
    at f.getId (tokenization.ts:173:10)
    at D (tokenization.ts:141:37)
    at _.createFromParsedTokenTheme (tokenization.ts:199:10)
    at _.createFromRawTokenTheme (tokenization.ts:195:15)
    at get tokenTheme (standaloneThemeService.ts:152:34)
    at p._toBinaryTokens (standaloneLanguages.ts:202:64)
    at p.tokenizeEncoded (standaloneLanguages.ts:241:23)
    at r (textModelTokens.ts:398:28)
    at t.updateTokensUntilLine (textModelTokens.ts:69:14)
    at c._tokenizeOneInvalidLine (textModelTokens.ts:510:33)
    at c._backgroundTokenizeForAtLeast1ms (textModelTokens.ts:487:37)
    at Object.p [as callback] (textModelTokens.ts:457:9)
    at platform.ts:191:17
    at wrapped (build.umd.js:690:53)
    at errors.ts:26:12
    at wrapped (build.umd.js:690:53)

Reproduction

Use github-light or github-dark theme by Monaco editor integrations

Suggested Solution

Format 3, 4 letter shortcut hexcodes into valid format:

• 6 letter (RGB)
• 8 letter (RGB + transparent)

Validations

• Follow our Code of Conduct
• Read the Contributing Guide.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A, please open a GitHub Discussion instead.
• The provided reproduction is a minimal reproducible of the bug.

[hiddenest]

@antfu Hi! Thanks for your quick update. However, in the new version, color set converted into wrong hexcode.
e. g. #fff become #ff0000 (You can reproduce this problem in the same github-light theme)