guess_indent() — svelte Function Reference

Architecture documentation for the guess_indent() function in index.js from the svelte codebase.

Function javascript Compiler Migrator called by 2

Entity Profile

Compiler→ Migrator→ guess_indent() — svelte Function Reference

Dependency Diagram

graph TD
  1f024bba_e234_50f7_06ff_985b932d38fb["guess_indent()"]
  5ebe02ec_5012_d775_8472_323790aea285["index.js"]
  1f024bba_e234_50f7_06ff_985b932d38fb -->|defined in| 5ebe02ec_5012_d775_8472_323790aea285
  5dc393cd_abf0_c68d_c112_9c9be4676889["migrate()"]
  5dc393cd_abf0_c68d_c112_9c9be4676889 -->|calls| 1f024bba_e234_50f7_06ff_985b932d38fb
  f77d781d_88c7_9f52_c690_b336fa2b2ee2["template.SvelteSelf()"]
  f77d781d_88c7_9f52_c690_b336fa2b2ee2 -->|calls| 1f024bba_e234_50f7_06ff_985b932d38fb
  style 1f024bba_e234_50f7_06ff_985b932d38fb fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/svelte/src/compiler/migrate/index.js lines 1972–1996

function guess_indent(content) {
	const lines = content.split('\n');

	const tabbed = lines.filter((line) => /^\t+/.test(line));
	const spaced = lines.filter((line) => /^ {2,}/.test(line));

	if (tabbed.length === 0 && spaced.length === 0) {
		return '\t';
	}

	// More lines tabbed than spaced? Assume tabs, and
	// default to tabs in the case of a tie (or nothing
	// to go on)
	if (tabbed.length >= spaced.length) {
		return '\t';
	}

	// Otherwise, we need to guess the multiple
	const min = spaced.reduce((previous, current) => {
		const count = /^ +/.exec(current)?.[0].length ?? 0;
		return Math.min(count, previous);
	}, Infinity);

	return ' '.repeat(min);
}