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 4037x 4037x 4037x 4037x 4037x 69x 4037x     69x 69x 69x 3783x 1x 1x 68x 68x 68x 2x 2x 2x 2x 2x 2x 2x 2x 4039x 4039x 4039x 1x 1x 4037x 4037x 4037x 4037x 4037x 4037x 4037x 4037x 4037x 4037x 4039x     4037x 4037x 4037x 4037x 4037x 4037x 4037x 4037x 4037x 4037x 4037x 4037x 4037x 4037x 4037x  
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
	};
}