@gulujs/toml/dist/parser/types/float.js

TOML parser and serializer

import { RE_FLOAT } from '../constants.js';
import { SYNTAX_ERROR_MESSAGE } from '../../errors/index.js';
export function getFloat(source, offset, converters) {
    RE_FLOAT.lastIndex = offset;
    const matches = RE_FLOAT.exec(source.line);
    if (!matches || matches.index !== offset) {
        return null;
    }
    let value;
    if (matches[2]) {
        if (matches[3]) {
            throw new SyntaxError(SYNTAX_ERROR_MESSAGE(source, offset + matches[1].length));
        }
        value = converters.float.convertStringToJsValue(matches[2].replace(/_/g, ''));
    }
    else if (matches[4]) {
        if (matches[4] === 'inf' || matches[4] === '+inf') {
            value = Number.POSITIVE_INFINITY;
        }
        else {
            value = Number.NEGATIVE_INFINITY;
        }
    }
    else if (matches[5]) {
        value = Number.NaN;
    }
    return {
        value,
        nextIndex: RE_FLOAT.lastIndex
    };
}