dynamodb-toolbox/dist/esm/schema/actions/parseCondition/expressCondition/conditions/exists.js

Lightweight and type-safe query builder for DynamoDB and TypeScript.

import { pathTokens } from './utils.js';
export const expressExistsCondition = (condition, prefix = '', state) => {
    let ConditionExpression = '';
    ConditionExpression += condition.exists ? 'attribute_exists(' : 'attribute_not_exists(';
    ConditionExpression += pathTokens(condition.attr, prefix, state);
    ConditionExpression += ')';
    return {
        ConditionExpression,
        ExpressionAttributeNames: state.ExpressionAttributeNames,
        ExpressionAttributeValues: state.ExpressionAttributeValues
    };
};