classNameFromFilename() — astro Function Reference

Architecture documentation for the classNameFromFilename() function in utils.ts from the astro codebase.

Function typescript CoreAstro CoreMiddleware calls 1 called by 1

Entity Profile

CoreAstro→ CoreMiddleware→ classNameFromFilename() — astro Function Reference

Dependency Diagram

graph TD
  9bb1c1ce_4618_e68d_330b_fc8221783511["classNameFromFilename()"]
  6db4d7db_edbb_c18d_7ff5_decb13f1c284["utils.ts"]
  9bb1c1ce_4618_e68d_330b_fc8221783511 -->|defined in| 6db4d7db_edbb_c18d_7ff5_decb13f1c284
  15e8cb4e_2c8b_a58f_7a91_50841c8f74d1["framework2tsx()"]
  15e8cb4e_2c8b_a58f_7a91_50841c8f74d1 -->|calls| 9bb1c1ce_4618_e68d_330b_fc8221783511
  0e78e617_6e9f_a2f4_2b15_e4151d28132b["toPascalCase()"]
  9bb1c1ce_4618_e68d_330b_fc8221783511 -->|calls| 0e78e617_6e9f_a2f4_2b15_e4151d28132b
  style 9bb1c1ce_4618_e68d_330b_fc8221783511 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/language-tools/language-server/src/core/utils.ts lines 52–72

export function classNameFromFilename(filename: string): string {
	const url = URI.parse(filename);
	const withoutExtensions = Utils.basename(url).slice(0, -Utils.extname(url).length);

	const withoutInvalidCharacters = withoutExtensions
		.split('')
		// Although "-" is invalid, we leave it in, pascal-case-handling will throw it out later
		.filter((char) => /[\w$-]/.test(char))
		.join('');
	const firstValidCharIdx = withoutInvalidCharacters
		.split('')
		// Although _ and $ are valid first characters for classes, they are invalid first characters
		// for tag names. For a better import autocompletion experience, we therefore throw them out.
		.findIndex((char) => /[A-Za-z]/.test(char));

	const withoutLeadingInvalidCharacters = withoutInvalidCharacters.substring(firstValidCharIdx);
	const inPascalCase = toPascalCase(withoutLeadingInvalidCharacters);
	const finalName = firstValidCharIdx === -1 ? `A${inPascalCase}` : inPascalCase;

	return finalName;
}