All files / src/compiler/phases/1-parse/read script.js

94.52% Statements 69/73
85.71% Branches 12/14
100% Functions 2/2
94.28% Lines 66/70

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 712x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 4083x 4083x 4083x 4083x 4083x 73x 4083x     73x 73x 73x 3825x 1x 1x 72x 72x 72x 2x 2x 2x 2x 2x 2x 2x 2x 4085x 4085x 4085x 1x 1x 4083x 4083x 4083x 4083x 4083x 4083x 4083x 4083x 4083x 4083x 4085x     4083x 4083x 4083x 4083x 4083x 4083x 4083x 4083x 4083x 4083x 4083x 4083x 4083x 4083x 4083x  
import * as acorn from '../acorn.js';
import { regex_not_newline_characters } from '../../patterns.js';
import * as e from '../../../errors.js';
 
const regex_closing_script_tag = /<\/script\s*>/;
const regex_starts_with_closing_script_tag = /^<\/script\s*>/;
 
/**
 * @param {any[]} attributes
 * @returns {string}
 */
function get_context(attributes) {
	const context = attributes.find(
		/** @param {any} attribute */ (attribute) => attribute.name === 'context'
	);
	if (!context) return 'default';
 
	if (context.value.length !== 1 || context.value[0].type !== 'Text') {
		e.script_invalid_context(context.start);
	}
 
	const value = context.value[0].data;
 
	if (value !== 'module') {
		e.script_invalid_context(context.start);
	}
 
	return value;
}
 
/**
 * @param {import('../index.js').Parser} parser
 * @param {number} start
 * @param {Array<import('#compiler').Attribute | import('#compiler').SpreadAttribute | import('#compiler').Directive>} attributes
 * @returns {import('#compiler').Script}
 */
export function read_script(parser, start, attributes) {
	const script_start = parser.index;
	const data = parser.read_until(regex_closing_script_tag);
	if (parser.index >= parser.template.length) {
		e.element_unclosed(parser.template.length, 'script');
	}
 
	const source =
		parser.template.slice(0, script_start).replace(regex_not_newline_characters, ' ') + data;
	parser.read(regex_starts_with_closing_script_tag);
 
	/** @type {import('estree').Program} */
	let ast;
 
	try {
		ast = acorn.parse(source, parser.ts);
	} catch (err) {
		parser.acorn_error(err);
	}
 
	// TODO is this necessary?
	ast.start = script_start;
 
	return {
		type: 'Script',
		start,
		end: parser.index,
		context: get_context(attributes),
		content: ast,
		parent: null,
		// @ts-ignore
		attributes: attributes
	};
}