@chainsafe/ssz/lib/util/strings.js

Simple Serialize

// Convert camelCase strings to various other formats  -- assumes input field is camelCase or camel1Case
export const Case = {
    snake: (field) => field
        .replace(/[^0-z]/g, "")
        .replace(/[a-z][A-Z]|[0-9][A-Z]/g, (substr) => `${substr[0]}_${substr[1].toLowerCase()}`),
    constant: (field) => field
        .replace(/[^0-z]/g, "")
        .replace(/[a-z][A-Z]|[0-9][A-Z]/g, (substr) => `${substr[0]}_${substr[1]}`)
        .toUpperCase(),
    pascal: (field) => {
        const first = field[0].toUpperCase();
        return (first + field.slice(1)).replace(/[^0-z]/g, "");
    },
    camel: (field) => {
        return field[0].toLowerCase() + field.slice(1);
    },
    header: (field) => {
        const first = field[0].toUpperCase();
        return (first +
            field
                .slice(1)
                .replace(/[^0-z]/g, "")
                .replace(/[a-z][A-Z]|[0-9][A-Z]/g, (substr) => `${substr[0]}-${substr[1]}`));
    },
    eth2: (field) => Case.snake(field).replace(/(\d)$/, "_$1"),
};
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