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@paid-tw/einvoice

v0.4.0

Published

Provider-agnostic core for Taiwan e-invoice: unified types, InvoiceProvider interface, validation schemas, and a MockProvider.

Readme

@paid-tw/einvoice

npm version npm downloads types: TypeScript license: MIT

English繁體中文

不綁定特定供應商的台灣電子發票核心(財政部 MIG 4.0)。定義統一的領域模型、 每個轉接器都要實作的 InvoiceProvider 介面、共用的 Zod 驗證,以及供測試使用的 記憶體內 MockProvider

本套件不含任何供應商邏輯,也不會發出網路請求 — 請另外搭配安裝一個供應商 轉接器(例如 @paid-tw/einvoice-amego)。

pnpm add @paid-tw/einvoice

匯出項目

  • 型別IssueInvoiceInputAllowanceInputBuyerCarrierTaxTypePriceModeInvoiceCategoryAmountSummary,… 以及它們的結果型別。
  • InvoiceProvider — 介面契約:issuevoidallowancevoidAllowancequery
  • InvoiceError / InvoiceErrorCode — 正規化的錯誤模型。
  • Schemas — 用於執行階段驗證的 Zod schema(issueInvoiceInputSchema,…)。
  • 工具函式composeTaxExclusivesplitTaxInclusivederiveCategory
  • MockProvider — 可實際運作、供測試使用的 InvoiceProvider

金額計算

所有金額皆為整數的新台幣。請使用以下輔助函式一致地建立 AmountSummary

import { composeTaxExclusive, splitTaxInclusive } from "@paid-tw/einvoice";

composeTaxExclusive(1000); // { salesAmount: 1000, taxAmount: 50, totalAmount: 1050 }
splitTaxInclusive(1050);   // { salesAmount: 1000, taxAmount: 50, totalAmount: 1050 }

授權

MIT