swOperation/node_modules/@antv/g2/esm/data/utils/fields.js

/**
 *
 * @description Converts a random format array into a regular two-dimensional array
 * @example ['a', 'b', ['c', value]] => [['a', defaultValue], ['b', defaultValue], ['c', value]]
 */
export function normalizeFields(fields, defaultValue) {
    return fields.map((d) => {
        if (Array.isArray(d)) {
            const [field, value = defaultValue] = d;
            return [field, value];
        }
        return [d, defaultValue];
    });
}
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