deduplicateDirectiveValues() — astro Function Reference

Architecture documentation for the deduplicateDirectiveValues() function in runtime.ts from the astro codebase.

Function typescript CoreAstro RenderingEngine called by 1

Entity Profile

CoreAstro→ RenderingEngine→ deduplicateDirectiveValues() — astro Function Reference

Dependency Diagram

graph TD
  268ade20_f17e_68c8_ab34_8b6b3ebe63bc["deduplicateDirectiveValues()"]
  fe2aa8a9_1607_64d7_db8e_cda22f1f02c9["runtime.ts"]
  268ade20_f17e_68c8_ab34_8b6b3ebe63bc -->|defined in| fe2aa8a9_1607_64d7_db8e_cda22f1f02c9
  f09bf977_316c_db77_e079_51f58eb4f110["pushDirective()"]
  f09bf977_316c_db77_e079_51f58eb4f110 -->|calls| 268ade20_f17e_68c8_ab34_8b6b3ebe63bc
  style 268ade20_f17e_68c8_ab34_8b6b3ebe63bc fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/astro/src/core/csp/runtime.ts lines 11–31

export function deduplicateDirectiveValues(
	existingDirective: CspDirective,
	newDirective: CspDirective,
): CspDirective | undefined {
	const [directiveName, ...existingValues] = existingDirective
		// split spaces
		.split(/\s+/)
		// Avoid duplicated spaces
		.filter(Boolean);
	const [newDirectiveName, ...newValues] = newDirective
		// split spaces
		.split(/\s+/)
		// Avoid duplicated spaces
		.filter(Boolean);
	if (directiveName !== newDirectiveName) {
		return undefined;
	}
	const finalDirectives = Array.from(new Set([...existingValues, ...newValues]));

	return `${directiveName} ${finalDirectives.join(' ')}` as CspDirective;
}