angular-html-parser
Version:
A HTML parser extracted from Angular with some modifications
31 lines (30 loc) • 1.08 kB
JavaScript
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.dev/license
*/
const UNUSABLE_INTERPOLATION_REGEXPS = [
/@/, // control flow reserved symbol
/^\s*$/, // empty
/[<>]/, // html tag
/^[{}]$/, // i18n expansion
/&(#|[a-z])/i, // character reference,
/^\/\//, // comment
];
export function assertInterpolationSymbols(identifier, value) {
if (value != null && !(Array.isArray(value) && value.length == 2)) {
throw new Error(`Expected '${identifier}' to be an array, [start, end].`);
}
else if (value != null) {
const start = value[0];
const end = value[1];
// Check for unusable interpolation symbols
UNUSABLE_INTERPOLATION_REGEXPS.forEach((regexp) => {
if (regexp.test(start) || regexp.test(end)) {
throw new Error(`['${start}', '${end}'] contains unusable interpolation symbol.`);
}
});
}
}