avocado-old/packages/behavior/builders.js

export function buildExpression(path, value) {
  const expression = {
    type: 'expression',
    ops: path.map((key) => ({type: 'key', key: key})),
  };
  if ('undefined' !== typeof value) {
    expression.value = buildValue(value);
  }
  return expression;
}

export function buildInvoke (path, args = []) {
  const expression = buildExpression(path);
  expression.ops.push({
    type: 'invoke',
    args: args.map((arg) => buildValue(arg)),
  });
  return expression;
}

export function buildValue(value) {
  if (
    'object' === typeof value
    && (
      'expression' === value.type
      || 'expressions' === value.type
      || 'condition' === value.type
    )
  ) {
    return value;
  }
  return {
    type: 'literal',
    value,
  };
}

export function buildCondition(operator, operands) {
  return {
    type: 'condition',
    operator,
    operands: operands.map((operand) => buildValue(operand)),
  };
}