@seasketch/geoprocessing/dist/src/helpers/fastChunkString.js

Geoprocessing and reporting framework for SeaSketch 2.0

import { runes } from "runes2";
import stringLength from "string-length";
export default function fastChunkString(str, { size, unicodeAware = false, }) {
    str = str || "";
    if (!unicodeAware) {
        return getChunks(str, size);
    }
    return getChunksUnicode(str, size);
}
function getChunks(str, size) {
    const strLength = str.length;
    const numChunks = Math.ceil(strLength / size);
    const chunks = new Array(numChunks);
    let i = 0;
    let o = 0;
    for (; i < numChunks; ++i, o += size) {
        chunks[i] = str.substr(o, size);
    }
    return chunks;
}
function getChunksUnicode(str, size) {
    const strLength = stringLength(str);
    const numChunks = Math.ceil(strLength / size);
    const chunks = new Array(numChunks);
    let i = 0;
    let o = 0;
    const runeChars = runes(str);
    for (; i < numChunks; ++i, o += size) {
        chunks[i] = runeChars.slice(o, o + size).join("");
    }
    return chunks;
}
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