vibe_codingBACKGROUND
Poland's e-invoicing system has no JavaScript SDK, so I published the validation
BACKGROUND
1 SIGNALFIRST DETECTED 27 July 2026
Narrative synthesis pending — 1 signal collected.
How the story developed
27 Jul
Poland's e-invoicing system has no JavaScript SDK, so I published the validation layer
REPORT · WHAT · Dev.to
Other feeds and industry voices
22 Sept
Validate Poland's e-invoices offline against the official XSD, then make your validator fail on purpose
<p>Since 2026, invoices between Polish businesses are XML documents. They go to the national e-invoicing system, KSeF, in a schema called FA(3). The last exemptions end on 1
REPORT · WHEN · Dev.toOPEN STORY
23 Sept
KSeF: Poland's e-invoicing API will break your store. Here is where
<p>Poland made B2B e-invoicing mandatory. Biggest companies from 1 February 2026, everyone else from 1 April 2026. Invoices to companies now go through KSeF, a government system.
REPORT · WHERE · Dev.toOPEN STORY
26 Aug
Designing a Discount-Validation API: Catching Stacked-Coupon Math Errors Before They Hit Production
<p>If you've ever wired up a promo engine, you know the cheap-looking line items are where the bugs hide. A single product with three sequential percentage discounts — "20% off,
REPORT · WHERE · Dev.toOPEN STORY
Sources
Dev.to
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