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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | 1x 2x 2x 2x 3x 3x 3x 3x 2x 2x | import { DynamoAttributeValue } from "@aws-cdk/aws-stepfunctions-tasks"; import { DynamoExpressionPlaceholder } from "./types"; /** * Builds an expression and expression attribute values from template string. */ export const dynamoExpr = ( literals: TemplateStringsArray, ...placeholers: DynamoExpressionPlaceholder[] ): [expr: string, values: { [key: string]: DynamoAttributeValue }] => { let expression = ""; const vs: { [key: string]: DynamoAttributeValue } = {}; placeholers.forEach((pv, idx) => { const ref = `:${pv.name}`; expression += literals[idx]; expression += ref; vs[ref] = pv.value; }); expression += literals[literals.length - 1]; return [expression, vs]; }; |