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getTargetDimensions() — astro Function Reference

Architecture documentation for the getTargetDimensions() function in service.ts from the astro codebase.

Function typescript CoreAstro RenderingEngine called by 2

Entity Profile

Dependency Diagram

graph TD
  0f9d5a56_bd2b_84fb_9878_5bcb5fd97446["getTargetDimensions()"]
  f0f55fc4_9c63_b35c_86d8_8eb3e4fa20ee["service.ts"]
  0f9d5a56_bd2b_84fb_9878_5bcb5fd97446 -->|defined in| f0f55fc4_9c63_b35c_86d8_8eb3e4fa20ee
  1cf9a504_a136_9deb_7e14_254892825464["baseService.getHTMLAttributes()"]
  1cf9a504_a136_9deb_7e14_254892825464 -->|calls| 0f9d5a56_bd2b_84fb_9878_5bcb5fd97446
  44ac12c6_fabb_dea8_00ac_961e59eb3b88["baseService.getSrcSet()"]
  44ac12c6_fabb_dea8_00ac_961e59eb3b88 -->|calls| 0f9d5a56_bd2b_84fb_9878_5bcb5fd97446
  style 0f9d5a56_bd2b_84fb_9878_5bcb5fd97446 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/astro/src/assets/services/service.ts lines 432–455

function getTargetDimensions(options: ImageTransform) {
	let targetWidth = options.width;
	let targetHeight = options.height;
	if (isESMImportedImage(options.src)) {
		const aspectRatio = options.src.width / options.src.height;
		if (targetHeight && !targetWidth) {
			// If we have a height but no width, use height to calculate the width
			targetWidth = Math.round(targetHeight * aspectRatio);
		} else if (targetWidth && !targetHeight) {
			// If we have a width but no height, use width to calculate the height
			targetHeight = Math.round(targetWidth / aspectRatio);
		} else if (!targetWidth && !targetHeight) {
			// If we have neither width or height, use the original image's dimensions
			targetWidth = options.src.width;
			targetHeight = options.src.height;
		}
	}

	// TypeScript doesn't know this, but because of previous hooks we always know that targetWidth and targetHeight are defined
	return {
		targetWidth: targetWidth!,
		targetHeight: targetHeight!,
	};
}

Domain

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Defined In

Called By

Source

Frequently Asked Questions

What does getTargetDimensions() do?
getTargetDimensions() is a function in the astro codebase, defined in packages/astro/src/assets/services/service.ts.
Where is getTargetDimensions() defined?
getTargetDimensions() is defined in packages/astro/src/assets/services/service.ts at line 432.
What calls getTargetDimensions()?
getTargetDimensions() is called by 2 function(s): baseService.getHTMLAttributes, baseService.getSrcSet.

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