Driftwatch

Plaid / Plaid API (2020-09-14) /

Breakingdirection flip: their tools call this safe

value can now return "MERCHANT_NAME"

What changed

Producer-side tools call this additive. It breaks exhaustive switches, strict parsers and generated client enums.

Affects this value on TransactionsRuleField reachable from 2 operations.

New value: MERCHANT_NAME.

can now return "MERCHANT_NAME"

Who is affected

Code that reads Plaid's TransactionsRuleField objects, used by 2 Plaid operations.

Before and after

WhereBeforeAfter
TransactionsRuleField"NAME", "TRANSACTION_ID""MERCHANT_NAME", "TRANSACTION_ID"

Code that breaks

switch (response) {
  // existing branches …
  // no branch for "MERCHANT_NAME"
  default:
    throw new Error("unexpected value");
}

Based on Plaid’s published API specification. How severity is decided.