univ-conv/lib/converters/core.js

The universal binary and text converter

export const DEFAULT_BUFFER_SIZE = 96 * 1024;
export const EMPTY_ARRAY_BUFFER = new ArrayBuffer(0);
export const EMPTY_UINT8_ARRAY = new Uint8Array(0);
export function getStartEnd(options, size) {
    let start = options.start ?? 0;
    if (size != null && size < start) {
        start = size;
    }
    let end;
    if (options.length == null) {
        if (size != null) {
            end = size;
        }
    }
    else {
        end = start + options.length;
    }
    if (size != null && end != null && size < end) {
        end = size;
    }
    if (end != null && end < start) {
        end = start;
    }
    return { start, end };
}
export function deleteStartLength(options) {
    options = { ...options };
    delete options.start;
    delete options.length;
    return options;
}
export function hasNoStartLength(options) {
    return options.start == null && options.length == null;
}
export function isEmpty(input, options) {
    return !input || options?.length === 0;
}
export function getType(input) {
    const type = typeof input;
    if (type === "function" || type === "object") {
        return input?.constructor?.name || String.toString.call(input);
    }
    return type;
}
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