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

94.73% Statements 72/76
85.71% Branches 12/14
100% Functions 2/2
94.52% Lines 69/73

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 742x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 4185x 4185x 4185x 4185x 4185x 75x 4185x     75x 75x 75x 3918x 1x 1x 74x 74x 74x 2x 2x 2x 2x 2x 2x 2x 2x 4187x 4187x 4187x 1x 1x 4185x 4185x 4185x 4185x 4185x 4185x 4185x 4185x 4185x 4185x 4187x     4185x 4185x 4185x 4185x 4185x 4185x 4185x 4185x 4185x 4185x 4185x 4185x 4185x 4185x 4185x  
/** @import { Program } from 'estree' */
/** @import { Attribute, SpreadAttribute, Directive, Script } from '#compiler' */
/** @import { Parser } from '../index.js' */
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 {Parser} parser
 * @param {number} start
 * @param {Array<Attribute | SpreadAttribute | Directive>} attributes
 * @returns {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 {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
	};
}