61 lines
1.5 KiB
JavaScript
61 lines
1.5 KiB
JavaScript
import { createHttpError } from './http.js'
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const LARGE_INTEGER_PATTERN = /(:\s*)(-?\d{16,})(\s*[,}\]])/g
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export function parseJsonObject(rawText, { preserveLargeIntegers = false, throwOnError = false } = {}) {
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const normalized = String(rawText || '').trim()
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if (!normalized) {
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return {}
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}
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try {
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const prepared = preserveLargeIntegers ? wrapLargeIntegerLiterals(normalized) : normalized
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const parsed = JSON.parse(prepared)
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return isPlainObject(parsed) ? parsed : {}
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} catch (error) {
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if (!throwOnError) {
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return {}
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}
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throw createHttpError('json 参数不是合法 JSON', {
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statusCode: 400,
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errorCode: 'invalid_json_payload',
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cause: error,
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})
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}
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}
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export function wrapLargeIntegerLiterals(rawText) {
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return String(rawText || '').replace(LARGE_INTEGER_PATTERN, (_match, prefix, digits, suffix) => {
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if (!shouldPreserveIntegerToken(digits)) {
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return `${prefix}${digits}${suffix}`
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}
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return `${prefix}"${digits}"${suffix}`
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})
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}
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function shouldPreserveIntegerToken(rawDigits) {
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const digits = String(rawDigits || '').trim()
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const unsigned = digits.startsWith('-') ? digits.slice(1) : digits
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if (!/^\d+$/.test(unsigned)) {
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return false
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}
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if (unsigned.length > 16) {
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return true
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}
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if (unsigned.length < 16) {
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return false
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}
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return unsigned > '9007199254740991'
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}
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function isPlainObject(value) {
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return Object.prototype.toString.call(value) === '[object Object]'
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}
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