assert_not_mapped() — svelte Function Reference

Architecture documentation for the assert_not_mapped() function in helpers.js from the svelte codebase.

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BuildSystem→ QualityControl→ assert_not_mapped() — svelte Function Reference

Dependency Diagram

graph TD
  961d9461_f5ae_b0ae_17bd_6ce495ded1f0["assert_not_mapped()"]
  740dc682_957b_322a_475e_aac0e8ee02bc["helpers.js"]
  961d9461_f5ae_b0ae_17bd_6ce495ded1f0 -->|defined in| 740dc682_957b_322a_475e_aac0e8ee02bc
  style 961d9461_f5ae_b0ae_17bd_6ce495ded1f0 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/svelte/tests/sourcemaps/helpers.js lines 48–68

export function assert_not_mapped({ code, filename, preprocessed }) {
	if (filename === undefined) filename = 'input.svelte';

	const transformed_loc = preprocessed.locate_1(code);
	assert.notEqual(
		transformed_loc,
		undefined,
		`failed to locate "${code}" in transformed "${filename}"`
	);

	assert.deepEqual(
		preprocessed.mapConsumer.originalPositionFor(transformed_loc),
		{
			source: null,
			name: null,
			line: null,
			column: null
		},
		`incorrect mappings for "${code}" in "${filename}"`
	);
}