bem_create_modval_tsx.js

const args = process.argv.slice(2);

const cell = {
    block: args[0],
    mod: {
        name: args[1],
        val: args[2],
    }
};

// cell
const ModVal = args[3] || `${PascalCase(cell.mod.name)}${PascalCase(cell.mod.val)}`;
const BlockModVal = args[4] || `${cell.block}${ModVal}`;
function PascalCase(s) { return s[0].toUpperCase() + s.slice(1); }

console.log(`import { withBemMod } from '@bem-react/core';

import { cn${cell.block} } from '../${cell.block}';
import './${cell.block}_${cell.mod.name}_${cell.mod.val}.css';

export interface I${BlockModVal}Props {
    /**
     * Внешний вид кнопки.
     */
    ${cell.mod.name}?: '${cell.mod.val}';
}

/**
 * Модификатор, отвечающий за внешний вид.
 * @param {I${BlockModVal}Props} props
 */
export const with${ModVal} = withBemMod<I${BlockModVal}Props>(cn${cell.block}(), { ${cell.mod.name}: '${cell.mod.val}' });`);