@shyft-to/solana-transaction-parser/dist/esm/camelcase.js

Tool for parsing arbitrary Solana transactions with IDL/custom parsers

/* eslint-disable @typescript-eslint/restrict-plus-operands */
/* eslint-disable @typescript-eslint/no-unsafe-argument */
const UPPERCASE = /[\p{Lu}]/u;
const LOWERCASE = /[\p{Ll}]/u;
const LEADING_CAPITAL = /^[\p{Lu}](?![\p{Lu}])/gu;
const IDENTIFIER = /([\p{Alpha}\p{N}_]|$)/u;
const SEPARATORS = /[_.\- ]+/;
const LEADING_SEPARATORS = new RegExp("^" + SEPARATORS.source);
const SEPARATORS_AND_IDENTIFIER = new RegExp(SEPARATORS.source + IDENTIFIER.source, "gu");
const NUMBERS_AND_IDENTIFIER = new RegExp("\\d+" + IDENTIFIER.source, "gu");
const preserveCamelCase = (string, toLowerCase, toUpperCase, preserveConsecutiveUppercase) => {
    let isLastCharLower = false;
    let isLastCharUpper = false;
    let isLastLastCharUpper = false;
    let isLastLastCharPreserved = false;
    for (let index = 0; index < string.length; index++) {
        const character = string[index];
        isLastLastCharPreserved = index > 2 ? string[index - 3] === "-" : true;
        if (isLastCharLower && UPPERCASE.test(character)) {
            string = string.slice(0, index) + "-" + string.slice(index);
            isLastCharLower = false;
            isLastLastCharUpper = isLastCharUpper;
            isLastCharUpper = true;
            index++;
        }
        else if (isLastCharUpper && isLastLastCharUpper && LOWERCASE.test(character) && (!isLastLastCharPreserved || preserveConsecutiveUppercase)) {
            string = string.slice(0, index - 1) + "-" + string.slice(index - 1);
            isLastLastCharUpper = isLastCharUpper;
            isLastCharUpper = false;
            isLastCharLower = true;
        }
        else {
            isLastCharLower = toLowerCase(character) === character && toUpperCase(character) !== character;
            isLastLastCharUpper = isLastCharUpper;
            isLastCharUpper = toUpperCase(character) === character && toLowerCase(character) !== character;
        }
    }
    return string;
};
const preserveConsecutiveUppercase = (input, toLowerCase) => {
    LEADING_CAPITAL.lastIndex = 0;
    return input.replaceAll(LEADING_CAPITAL, (match) => toLowerCase(match));
};
const postProcess = (input, toUpperCase) => {
    SEPARATORS_AND_IDENTIFIER.lastIndex = 0;
    NUMBERS_AND_IDENTIFIER.lastIndex = 0;
    return input
        .replaceAll(NUMBERS_AND_IDENTIFIER, (match, pattern, offset) => (["_", "-"].includes(input.charAt(offset + match.length)) ? match : toUpperCase(match)))
        .replaceAll(SEPARATORS_AND_IDENTIFIER, (_, identifier) => toUpperCase(identifier));
};
export function camelCase(input, options) {
    options = {
        pascalCase: false,
        preserveConsecutiveUppercase: false,
        ...options,
    };
    input = input.trim();
    if (input.length === 0) {
        return "";
    }
    const toLowerCase = options.locale === false
        ? (string) => string.toLowerCase()
        : (string) => string.toLocaleLowerCase(options?.locale);
    const toUpperCase = options.locale === false
        ? (string) => string.toUpperCase()
        : (string) => string.toLocaleUpperCase(options?.locale);
    if (input.length === 1) {
        if (SEPARATORS.test(input)) {
            return "";
        }
        return options.pascalCase ? toUpperCase(input) : toLowerCase(input);
    }
    const hasUpperCase = input !== toLowerCase(input);
    if (hasUpperCase) {
        input = preserveCamelCase(input, toLowerCase, toUpperCase, options.preserveConsecutiveUppercase);
    }
    input = input.replace(LEADING_SEPARATORS, "");
    input = options.preserveConsecutiveUppercase ? preserveConsecutiveUppercase(input, toLowerCase) : toLowerCase(input);
    if (options.pascalCase) {
        input = toUpperCase(input.charAt(0)) + input.slice(1);
    }
    return postProcess(input, toUpperCase);
}
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