mapped_code.js — svelte Source File

Source Code

/** @import { ValidatedCompileOptions } from '#compiler' */
/** @import { Processed } from '../preprocess/public.js' */
/** @import { SourceMap } from 'magic-string' */
/** @import { Source } from '../preprocess/private.js' */
/** @import { DecodedSourceMap, SourceMapSegment, RawSourceMap } from '@jridgewell/remapping' */
import remapping from '@jridgewell/remapping';
import { push_array } from './push_array.js';

/**
 * @param {string} s
 */
function last_line_length(s) {
	return s.length - s.lastIndexOf('\n') - 1;
}
// mutate map in-place

/**
 * @param {DecodedSourceMap} map
 * @param {{ line: number; column: number; }} offset
 * @param {number} source_index
 */
export function sourcemap_add_offset(map, offset, source_index) {
	if (map.mappings.length == 0) return;
	for (let line = 0; line < map.mappings.length; line++) {
		const segment_list = map.mappings[line];
		for (let segment = 0; segment < segment_list.length; segment++) {
			const seg = segment_list[segment];
			// shift only segments that belong to component source file
			if (seg[1] === source_index) {
				// also ensures that seg.length >= 4
				// shift column if it points at the first line
				if (seg[2] === 0) {
					/** @type {any} */ (seg[3]) += offset.column;
				}
				// shift line
				/** @type {any} */ (seg[2]) += offset.line;
			}
		}
	}
}

/**
 * @template T
 * @param {T[]} this_table
 * @param {T[]} other_table
 * @returns {[T[], number[], boolean, boolean]}
 */
function merge_tables(this_table, other_table) {
	const new_table = this_table.slice();
	const idx_map = [];
	other_table = other_table || [];
	let val_changed = false;
	for (const [other_idx, other_val] of other_table.entries()) {
		const this_idx = this_table.indexOf(other_val);
		if (this_idx >= 0) {
			idx_map[other_idx] = this_idx;
		} else {
			const new_idx = new_table.length;
			new_table[new_idx] = other_val;
			idx_map[other_idx] = new_idx;
// ... (395 more lines)