All files / src/internal/server dev.js

97.77% Statements 88/90
81.25% Branches 13/16
100% Functions 5/5
97.77% Lines 88/90

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 941x 1x       1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 7x 7x 7x 7x 1x 1x 1x 1x 1x 1x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 1x 1x 2842x 2842x 1x 1x 1x 1x 1x 1x 1x 1x 161x 161x 161x 161x 25x 25x 25x 25x 3x 3x 25x 25x 4x 4x     4x 4x 160x 1x 1x 161x 161x 161x 1x 1x 159x 159x  
/** @import { Component, Payload } from '#server' */
import { FILENAME } from '../../constants.js';
import {
	is_tag_valid_with_ancestor,
	is_tag_valid_with_parent
} from '../../html-tree-validation.js';
import { current_component } from './context.js';
 
/**
 * @typedef {{
 * 	tag: string;
 * 	parent: null | Element;
 *  filename: null | string;
 *  line: number;
 *  column: number;
 * }} Element
 */
 
/**
 * @type {Element | null}
 */
let parent = null;
 
/** @type {Set<string>} */
let seen;
 
/**
 * @param {Element} element
 */
function stringify(element) {
	if (element.filename === null) return `\`<${element.tag}>\``;
	return `\`<${element.tag}>\` (${element.filename}:${element.line}:${element.column})`;
}
 
/**
 * @param {Payload} payload
 * @param {Element | null} parent
 * @param {Element} child
 */
function print_error(payload, parent, child) {
	var message =
		(parent === null
			? `node_invalid_placement_ssr: ${stringify(child)} needs a valid parent element\n\n`
			: `node_invalid_placement_ssr: ${stringify(parent)} cannot contain ${stringify(child)}\n\n`) +
		'This can cause content to shift around as the browser repairs the HTML, and will likely result in a `hydration_mismatch` warning.';
 
	if ((seen ??= new Set()).has(message)) return;
	seen.add(message);
 
	// eslint-disable-next-line no-console
	console.error(message);
	payload.head.out += `<script>console.error(${JSON.stringify(message)})</script>`;
}
 
export function reset_elements() {
	parent = null;
}
 
/**
 * @param {Payload} payload
 * @param {string} tag
 * @param {number} line
 * @param {number} column
 */
export function push_element(payload, tag, line, column) {
	var filename = /** @type {Component} */ (current_component).function[FILENAME];
	var child = { tag, parent, filename, line, column };
 
	if (parent !== null) {
		var ancestor = parent.parent;
		var ancestors = [parent.tag];
 
		if (!is_tag_valid_with_parent(tag, parent.tag)) {
			print_error(payload, parent, child);
		}
 
		while (ancestor != null) {
			ancestors.push(ancestor.tag);
			if (!is_tag_valid_with_ancestor(tag, ancestors)) {
				print_error(payload, ancestor, child);
			}
			ancestor = ancestor.parent;
		}
	} else if (!is_tag_valid_with_parent(tag, null)) {
		print_error(payload, null, child);
	}
 
	parent = child;
}
 
export function pop_element() {
	parent = /** @type {Element} */ (parent).parent;
}