Function escapeTemplateSubstitution

test/fixtures/snapshot/typescript.js:18067–18069

(str)

    ts.createDiagnosticCollection = createDiagnosticCollection;
    var templateSubstitutionRegExp = /\$\{/g;
    function escapeTemplateSubstitution(str) {
        return str.replace(templateSubstitutionRegExp, "\\${");
    }
    /** @internal */
    function hasInvalidEscape(template) {
        return template && !!(ts.isNoSubstitutionTemplateLiteral(template)