/**
 * 
 * @param high 
 * @param low 
 * @param close 
 * @param size
 * @returns 
 */
export async function tr(
    high: Array<number>, low: Array<number>,
    close: Array<number>, size: number = high.length
) {

    const output: Array<number> = []
    let truerange

    output[0] = high[0] - low[0]

    for (let i = 1; i < size; ++i) {
        // Start CALC_TRUERANGE
        const l = low[i]
        const h = high[i]
        const c = close[i - 1]

        const ych = Math.abs(h - c)
        const ycl = Math.abs(l - c)

        let v = h - l

        if (ych > v) v = ych
        if (ycl > v) v = ycl
        truerange = v
        // End CALC_TRUERANGE
        output.push(truerange)
    }

    return output
}