import * as math from 'mathjs';
/**
* Evaluates a chain of operations.
* @param {Array<{op: string, args: any}>} operations
* @returns {any}
*/
export const evaluateChain = (operations) => {
let lastResult = null;
const results = [];
for (const step of operations) {
const { op, args } = step;
// Replace placeholder in args with lastResult if present
const processedArgs = JSON.parse(JSON.stringify(args), (key, value) => {
return value === '$LAST' ? lastResult : value;
});
// This is a simplified version. A real implementation would map 'op' to actual tool functions.
// For now, we'll use math.evaluate if it's a simple math op, or handle specific cases.
if (op === 'math') {
lastResult = math.evaluate(processedArgs.expression, processedArgs.scope || {});
} else {
throw new Error(`Operation ${op} not supported in chain yet.`);
}
results.push(lastResult);
}
return { lastResult, results };
};
