Function format

src/SpannedString.test.ts:19–25

(string: string, spans: [number, number, string][])

}

function format(string: string, spans: [number, number, string][]) {
    const s = S().appendString(string);
    for (const span of spans) {
        s.addSpan(...span);
    }
    return apply(s);
}

test('no spans', () => {
    expect(format('one two', [])).toEqual('one two');