[2.4.0 stack 5/7] New utils: Pix, NF-e, CNS, certidão, CEI/CNO/CAEPF, IBAN, banks, tables, words, business days

scripts/cbo.ts

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+#!/usr/bin/env node
+
+import { writeFile } from "node:fs/promises";
+import { dirname, resolve } from "node:path";
+import { fileURLToPath } from "node:url";
+
+import { fetchWithRetry } from "../src/_internals/fetch-with-retry/fetch-with-retry.ts";
+
+const scriptsDir = dirname(fileURLToPath(import.meta.url));
+
+type CboEntry = {
+	cbo: string;
+	descricao: string;
+};
+
+const main = async () => {
+	const response = await fetchWithRetry(
+		"https://raw.githubusercontent.com/lucaashoff/lista-cbo-json/main/cbos.json",
+	);
+
+	if (!response.ok) {
+		throw new Error(`CBO mirror request failed with status ${response.status}`);
+	}
+
+	const json: CboEntry[] = await response.json();
+
+	const data: Record<string, string> = {};
+
+	for (const entry of json) {
+		const code = /^\d{5}$/.test(entry.cbo) ? `0${entry.cbo}` : entry.cbo;
+
+		if (!/^\d{6}$/.test(code)) continue;
+
+		data[code] = entry.descricao;
+	}
+
+	const sorted: Record<string, string> = {};
+	for (const code of Object.keys(data).sort()) {
+		sorted[code] = data[code];
+	}
+
+	await writeFile(
+		resolve(scriptsDir, "..", "./src/_internals/constants/cbo.ts"),
+		`/**
+ * CBO 2002 (Classificação Brasileira de Ocupações) titles, indexed by the raw 6 digit code.
+ *
+ * The MTE download at mtecbo.gov.br requires a browser session and cannot be fetched
+ * programmatically, so this table is generated from a public community mirror of the
+ * official table. Codes that are not purely numeric with 6 digits in the source (a small
+ * number of law enforcement and military ranks and a few sub-occupation codes suffixed
+ * with a letter) are normalized by left padding a 5 digit numeric code with a zero, or
+ * dropped when a letter is present, since \`Cbo.code\` only accepts 6 digits.
+ *
+ * Generated by \`node ./scripts/cbo.ts\`. Do not edit by hand.
+ *
+ * @see https://raw.githubusercontent.com/lucaashoff/lista-cbo-json/main/cbos.json
+ * @see http://www.mtecbo.gov.br/cbosite/pages/downloads.jsf
+ */
+export const CBO_TITLES: Record<string, string> = ${JSON.stringify(sorted)};
+`,
+	);
+};
+
+await main().catch((error) => {
+	console.error(error instanceof Error ? error.message : error);
+	process.exit(1);
+});

scripts/cfop.ts

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+#!/usr/bin/env node
+
+import { writeFile } from "node:fs/promises";
+import { dirname, resolve } from "node:path";
+import { fileURLToPath } from "node:url";
+
+import { fetchWithRetry } from "../src/_internals/fetch-with-retry/fetch-with-retry.ts";
+
+const scriptsDir = dirname(fileURLToPath(import.meta.url));
+
+const main = async () => {
+	const response = await fetchWithRetry(
+		"https://raw.githubusercontent.com/jansenfelipe/cfop/master/cfop.csv",
+	);
+
+	if (!response.ok) {
+		throw new Error(`CFOP mirror request failed with status ${response.status}`);
+	}
+
+	const csv = await response.text();
+
+	const data: Record<string, string> = {};
+
+	for (const line of csv.split("\n")) {
+		const match = line.match(/^(\d{4});"(.*)"\s*$/);
+
+		if (!match) continue;
+
+		const [, code, description] = match;
+
+		if (code.endsWith("00")) continue;
+
+		data[code] = description.trim();
+	}
+
+	const sorted: Record<string, string> = {};
+	for (const code of Object.keys(data).sort()) {
+		sorted[code] = data[code];
+	}
+
+	await writeFile(
+		resolve(scriptsDir, "..", "./src/_internals/constants/cfop.ts"),
+		`/**
+ * CFOP (Código Fiscal de Operações e Prestações) table, indexed by the 4 digit code.
+ *
+ * Group and subgroup headers (codes ending in "00", e.g. "1000", "1100") are section
+ * titles from the official nomenclature rather than operable codes, so they are excluded.
+ *
+ * Generated by \`node ./scripts/cfop.ts\`. Do not edit by hand.
+ *
+ * @see https://raw.githubusercontent.com/jansenfelipe/cfop/master/cfop.csv
+ * @see https://www.confaz.fazenda.gov.br/legislacao/ajustes/2001/AJ_007_01
+ */
+export const CFOP_TABLE: Record<string, string> = ${JSON.stringify(sorted)};
+`,
+	);
+};
+
+await main().catch((error) => {
+	console.error(error instanceof Error ? error.message : error);
+	process.exit(1);
+});

scripts/cnae.ts

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+#!/usr/bin/env node
+
+import { writeFile } from "node:fs/promises";
+import { dirname, resolve } from "node:path";
+import { fileURLToPath } from "node:url";
+
+import { fetchWithRetry } from "../src/_internals/fetch-with-retry/fetch-with-retry.ts";
+
+const scriptsDir = dirname(fileURLToPath(import.meta.url));
+
+type CnaeSubclass = {
+	id: string;
+	descricao: string;
+};
+
+const main = async () => {
+	const response = await fetchWithRetry("https://servicodados.ibge.gov.br/api/v2/cnae/subclasses");
+
+	if (!response.ok) {
+		throw new Error(`IBGE CNAE request failed with status ${response.status}`);
+	}
+
+	const json: CnaeSubclass[] = await response.json();
+
+	const entries = json
+		.filter((subclass) => /^\d{7}$/.test(subclass.id))
+		.sort((subclassA, subclassB) => (subclassA.id > subclassB.id ? 1 : -1))
+		.map((subclass) => [subclass.id, subclass.descricao] as const);
+
+	const data: Record<string, string> = {};
+	for (const [id, descricao] of entries) {
+		data[id] = descricao;
+	}
+
+	await writeFile(
+		resolve(scriptsDir, "..", "./src/_internals/constants/cnae.ts"),
+		`/**
+ * CNAE 2.3 (Classificação Nacional de Atividades Econômicas) subclasses, indexed by the
+ * raw 7 digit code, mapping to the official subclass description.
+ *
+ * Generated by \`node ./scripts/cnae.ts\`. Do not edit by hand.
+ *
+ * @see https://servicodados.ibge.gov.br/api/v2/cnae/subclasses
+ * @see https://concla.ibge.gov.br/classificacoes/por-tema/atividades-economicas/classificacao-nacional-de-atividades-economicas
+ */
+export const CNAE_SUBCLASSES: Record<string, string> = ${JSON.stringify(data)};
+`,
+	);
+};
+
+await main().catch((error) => {
+	console.error(error instanceof Error ? error.message : error);
+	process.exit(1);
+});

scripts/ncm.ts

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+#!/usr/bin/env node
+
+import { writeFile } from "node:fs/promises";
+import { dirname, resolve } from "node:path";
+import { fileURLToPath } from "node:url";
+
+import { fetchWithRetry } from "../src/_internals/fetch-with-retry/fetch-with-retry.ts";
+
+const scriptsDir = dirname(fileURLToPath(import.meta.url));
+
+type NcmEntry = {
+	Codigo: string;
+	Data_Fim: string;
+};
+
+type NcmResponse = {
+	Nomenclaturas: NcmEntry[];
+};
+
+const main = async () => {
+	const response = await fetchWithRetry(
+		"https://portalunico.siscomex.gov.br/classif/api/publico/nomenclatura/download/json?perfil=PUBLICO",
+	);
+
+	if (!response.ok) {
+		throw new Error(`Siscomex NCM request failed with status ${response.status}`);
+	}
+
+	const json: NcmResponse = await response.json();
+
+	const codes = json.Nomenclaturas.filter(
+		(entry) => entry.Data_Fim === "31/12/9999" && /^[\d.]{10}$/.test(entry.Codigo),
+	)
+		.map((entry) => entry.Codigo.replace(/\D/g, ""))
+		.filter((code) => code.length === 8);
+
+	const uniqueSortedCodes = Array.from(new Set(codes)).sort();
+
+	await writeFile(
+		resolve(scriptsDir, "..", "./src/is-valid-ncm/constants.ts"),
+		`/**
+ * Currently valid NCM (Nomenclatura Comum do Mercosul) 8 digit codes, sorted ascending.
+ *
+ * Generated by \`node ./scripts/ncm.ts\`. Do not edit by hand.
+ *
+ * @see https://portalunico.siscomex.gov.br/classif/api/publico/nomenclatura/download/json
+ */
+export const NCM_CODES: readonly string[] = ${JSON.stringify(uniqueSortedCodes)};
+`,
+	);
+};
+
+await main().catch((error) => {
+	console.error(error instanceof Error ? error.message : error);
+	process.exit(1);
+});

src/_internals/apply-words-case/apply-words-case.ts

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+import type { WordsCase } from "../number-to-words/number-to-words";
+
+/**
+ * Applies a `WordsCase` to a "por extenso" string already written out in lowercase.
+ *
+ * `"sentence"` capitalizes only the first letter; `"upper"` uppercases the whole string with
+ * `toLocaleUpperCase("pt-BR")`, which keeps accents intact ("três" -> "TRÊS"). Any value other
+ * than `"sentence"` or `"upper"` (including `"lower"`, `undefined` or an invalid value) returns
+ * `text` unchanged, since it is already written in lowercase.
+ *
+ * @param {string} text - The lowercase "por extenso" string to transform.
+ * @param {WordsCase} [wordsCase] - The case to apply. Defaults to `"lower"` (no change).
+ * @returns {string} `text` with the requested case applied.
+ *
+ * @example
+ * ```typescript
+ * applyWordsCase("três reais"); // "três reais"
+ * applyWordsCase("três reais", "sentence"); // "Três reais"
+ * applyWordsCase("três reais", "upper"); // "TRÊS REAIS"
+ * ```
+ */
+export const applyWordsCase = (text: string, wordsCase?: WordsCase): string => {
+	if (wordsCase === "upper") return text.toLocaleUpperCase("pt-BR");
+	if (wordsCase === "sentence") return text.charAt(0).toLocaleUpperCase("pt-BR") + text.slice(1);
+
+	return text;
+};

src/_internals/calculate-cei-check-digit/calculate-cei-check-digit.test.ts

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+import { describe, expect, test } from "../test/runtime";
+import { calculateCeiCheckDigit } from "./calculate-cei-check-digit";
+
+describe("calculateCeiCheckDigit", () => {
+	test("should return 5 for the base of 11.583.00249/85 (yiibr/yii2-br-validator CeiValidatorTest)", () => {
+		expect(calculateCeiCheckDigit("11583002498")).toBe(5);
+	});
+
+	test("should return 7 for the base of 27.729.71181/87 (yiibr/yii2-br-validator CeiValidatorTest)", () => {
+		expect(calculateCeiCheckDigit("27729711818")).toBe(7);
+	});
+
+	test("should return 6 for the base of 24.985.96743/86 (marcos-cruz/Documento CeiTest)", () => {
+		expect(calculateCeiCheckDigit("24985967438")).toBe(6);
+	});
+
+	test("should return 0 when the folded sum ends in 0 (CNO 401800097960 of the Receita Federal CNO dataset)", () => {
+		expect(calculateCeiCheckDigit("40180009796")).toBe(0);
+	});
+
+	test("should return 0 for a base of only zeros", () => {
+		expect(calculateCeiCheckDigit("00000000000")).toBe(0);
+	});
+});

src/_internals/calculate-cei-check-digit/calculate-cei-check-digit.ts

@@ -0,0 +1,35 @@
+import { CEI_WEIGHTS } from "../constants/cei";
+import { generateChecksum } from "../generate-checksum/generate-checksum";
+
+/**
+ * Calculates the check digit of a CEI (Cadastro Específico do INSS) base, the same digit the
+ * CNO (Cadastro Nacional de Obras) kept when it replaced the CEI numbering.
+ *
+ * The 11 base digits are weighted by 7, 4, 1, 8, 5, 2, 1, 6, 3, 7 and 4 from left to right.
+ * The tens part and the units part of that sum are added together and the check digit is the
+ * complement of the units digit of the result to 10, with 10 mapped back to 0.
+ *
+ * @param {string} base - The 11 digits that precede the check digit.
+ * @returns {number} The check digit, 0 to 9.
+ *
+ * @example
+ * ```typescript
+ * calculateCeiCheckDigit("11583002498"); // 5
+ * calculateCeiCheckDigit("40180009796"); // 0
+ * ```
+ *
+ * @see Official: https://www.gov.br/receitafederal/pt-br/assuntos/orientacao-tributaria/cadastros/cno
+ * @see Official: Cadastro Nacional de Obras (CNO), dados abertos da Receita Federal: the
+ * 38432 works registered in Minas Gerais confirm the rule, and their check digits of 0 are
+ * what shows that a computed 10 maps back to 0, which neither reference implementation does.
+ * @see Based on: https://github.com/yiibr/yii2-br-validator/blob/master/src/CeiValidator.php
+ * PHP reference implementation of the CEI check digit.
+ * @see Based on: https://github.com/marcos-cruz/Documento/blob/master/src/Bigai.Documentos.Brasil/Cei/Cei.cs
+ * Second, independent reference implementation agreeing with the first.
+ */
+export const calculateCeiCheckDigit = (base: string): number => {
+	const sum = generateChecksum({ base, weight: CEI_WEIGHTS });
+	const folded = Math.floor(sum / 10) + (sum % 10);
+
+	return (10 - (folded % 10)) % 10;
+};