colorDiff.ts

components/StructuredDiff/colorDiff.ts

ui-flow

Lines

1137

Bytes

Exports

Imports

Keywords

What this is

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Beginner explanation

This file is one piece of the larger system. Its name, directory, imports, and exports show where it fits. Start by reading the exports and related files first.

How it is used

Start from the exports list and related files. Those are the easiest clues for where this file fits into the system.

Expert explanation

Architecturally, this file intersects with ui-flow. It contains 38 lines, 2 detected imports, and 5 detected exports.

Important relationships

components/StructuredDiff/Fallback.tsx

Detected exports

ColorModuleUnavailableReason
getColorModuleUnavailableReason
expectColorDiff
expectColorFile
getSyntaxTheme

Keywords

getcolormoduleunavailablereasoncolordiffcolorfilegetsyntaxthemenativegetsyntaxthemesyntaxthemeisenvdefinedfalsycolormoduleunavailablereasoncolor-diffclaude_code_syntax_highlight

Detected imports

color-diff-napi
../../utils/envUtils.js

Source notes

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Full source

import {
  ColorDiff,
  ColorFile,
  getSyntaxTheme as nativeGetSyntaxTheme,
  type SyntaxTheme,
} from 'color-diff-napi'
import { isEnvDefinedFalsy } from '../../utils/envUtils.js'

export type ColorModuleUnavailableReason = 'env'

/**
 * Returns a static reason why the color-diff module is unavailable, or null if available.
 * 'env' = disabled via CLAUDE_CODE_SYNTAX_HIGHLIGHT
 *
 * The TS port of color-diff works in all build modes, so the only way to
 * disable it is via the env var.
 */
export function getColorModuleUnavailableReason(): ColorModuleUnavailableReason | null {
  if (isEnvDefinedFalsy(process.env.CLAUDE_CODE_SYNTAX_HIGHLIGHT)) {
    return 'env'
  }
  return null
}

export function expectColorDiff(): typeof ColorDiff | null {
  return getColorModuleUnavailableReason() === null ? ColorDiff : null
}

export function expectColorFile(): typeof ColorFile | null {
  return getColorModuleUnavailableReason() === null ? ColorFile : null
}

export function getSyntaxTheme(themeName: string): SyntaxTheme | null {
  return getColorModuleUnavailableReason() === null
    ? nativeGetSyntaxTheme(themeName)
    : null
}