yml2213
ecc8ffaee4
真实联调发现：抖店大量 id 是 19 位数字，超过 Number.MAX_SAFE_INTEGER，
入站推送我们用 express.text() 收原文保住了精度，但**出网响应是 JSON.parse 出来的**，
19 位数字在解析瞬间就被压成相邻 double：
平台真值 product_id = 3847255376114352567
我们存到的 = 3847255376114352600
后果：拿这个 product_id 去调 product.detail 报「商品不存在」（实测），
任何按商品ID做的映射/查询都会错。
修复：抖音出网响应改用共享的 parseJsonObject(..., { preserveLargeIntegers: true })。
utils/json.ts 里其实早有 wrapLargeIntegerLiterals（≥16 位/超 MAX_SAFE_INTEGER 才包裹，
只处理值位置的整数字面量，不误伤字符串内数字与短数字），但全仓没有调用方 —— 现在接上。
实测：同一笔订单 product_id 已精确为 …567，product.detail 返回 code=10000 并拿到商品图。
补了 json 解析的大整数单测（含「字符串里的数字、短数字不受影响」的反例）。
93 lines
3.1 KiB
TypeScript
93 lines
3.1 KiB
TypeScript
import { test } from 'node:test'
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import assert from 'node:assert/strict'
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import {
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parseJsonObject,
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sanitizeWellFormedUnicode,
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deepSanitizeUnicode,
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safeJsonStringify,
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wrapLargeIntegerLiterals,
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} from './json.js'
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import type { JsonObject } from '../types/json.js'
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test('sanitizeWellFormedUnicode handles null bytes and lone surrogates', () => {
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// Null byte
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assert.equal(sanitizeWellFormedUnicode('hello\0world'), 'helloworld')
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// Lone high surrogate \ud835
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const loneSurrogate = 'nickname\ud835test'
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const cleaned = sanitizeWellFormedUnicode(loneSurrogate)
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assert.equal(cleaned, 'nickname\uFFFDtest')
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// Valid emoji surrogate pair \uD83D\uDE00 (😀) should remain intact
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const validEmoji = 'Hello 😀'
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assert.equal(sanitizeWellFormedUnicode(validEmoji), 'Hello 😀')
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})
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test('deepSanitizeUnicode recursively cleans objects and arrays', () => {
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const input = {
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user: 'buyer\ud83c',
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nested: {
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comment: 'good\0deal',
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tags: ['cool\ud835', 'ok'],
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},
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}
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const output = deepSanitizeUnicode(input)
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assert.deepEqual(output, {
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user: 'buyer\uFFFD',
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nested: {
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comment: 'gooddeal',
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tags: ['cool\uFFFD', 'ok'],
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},
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})
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})
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test('safeJsonStringify produces valid JSON safe for postgres jsonb', () => {
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const input = {
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orderSn: '260919-123456',
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nickname: '\ud835\ud83c*buyer',
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nullByte: 'abc\0def',
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}
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const json = safeJsonStringify(input)
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assert.ok(typeof json === 'string')
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const parsed = JSON.parse(json)
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assert.equal(parsed.nickname, '\uFFFD\uFFFD*buyer')
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assert.equal(parsed.nullByte, 'abcdef')
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})
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test('preserveLargeIntegers：19 位 id 不被压精度（真实踩坑）', () => {
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// 真实案例：抖店 product_id 真值 …567，直接 JSON.parse 会变成 …600
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const raw =
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'{"code":"10000","data":{"sku_order_list":[{"code":"幸运币2个","product_id":3847255376114352567,"sku_id":3383719439799589,"pay_amount":100}]}}'
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assert.equal(JSON.parse(raw).data.sku_order_list[0].product_id, 3847255376114352600)
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const safe = parseJsonObject(raw, { preserveLargeIntegers: true })
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const row = (safe.data as JsonObject).sku_order_list as JsonObject[]
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assert.equal(row[0]?.product_id, '3847255376114352567')
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// 16 位但未超 MAX_SAFE_INTEGER 的数字保持不变（不误伤）
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assert.equal(row[0]?.sku_id, 3383719439799589)
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// 小整数保持数字类型
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assert.equal(row[0]?.pay_amount, 100)
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})
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test('preserveLargeIntegers：不动字符串里的数字，也不动短数字', () => {
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const raw =
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'{"order_id":"6930318258716179555","note":"单号6930318258716179555","pay_time":1791521705}'
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const safe = parseJsonObject(raw, { preserveLargeIntegers: true })
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assert.equal(safe.order_id, '6930318258716179555')
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assert.equal(safe.note, '单号6930318258716179555')
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assert.equal(safe.pay_time, 1791521705)
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})
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test('wrapLargeIntegerLiterals 只包裹超大整数字面量', () => {
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assert.equal(wrapLargeIntegerLiterals('{"a":123}'), '{"a":123}')
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assert.equal(wrapLargeIntegerLiterals('{"a":3847255376114352567}'), '{"a":"3847255376114352567"}')
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assert.equal(
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wrapLargeIntegerLiterals('{"a":"3847255376114352567"}'),
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'{"a":"3847255376114352567"}',
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)
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})
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