85 lines
1.8 KiB
TypeScript
85 lines
1.8 KiB
TypeScript
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const MAX_SAFE_INTEGER_BIGINT = BigInt(Number.MAX_SAFE_INTEGER);
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function shouldStringifyUnsafeInteger(token: string) {
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if (token.includes('.') || token.includes('e') || token.includes('E')) {
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return false;
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}
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try {
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const value = BigInt(token);
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return value > MAX_SAFE_INTEGER_BIGINT || value < -MAX_SAFE_INTEGER_BIGINT;
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} catch {
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return false;
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}
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}
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function replaceUnsafeIntegerTokens(raw: string) {
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let result = '';
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let index = 0;
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let inString = false;
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let isEscaping = false;
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while (index < raw.length) {
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const char = raw[index];
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if (inString) {
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result += char;
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if (isEscaping) {
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isEscaping = false;
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} else if (char === '\\') {
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isEscaping = true;
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} else if (char === '"') {
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inString = false;
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}
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index += 1;
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} else if (char === '"') {
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inString = true;
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result += char;
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index += 1;
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} else {
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const nextChar = raw[index + 1] ?? '';
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const isNumberStart = char === '-' ? /\d/.test(nextChar) : /\d/.test(char);
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if (!isNumberStart) {
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result += char;
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index += 1;
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} else {
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let end = index + 1;
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while (end < raw.length && /[\d.+\-Ee]/.test(raw[end])) {
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end += 1;
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}
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const token = raw.slice(index, end);
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result += shouldStringifyUnsafeInteger(token) ? `"${token}"` : token;
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index = end;
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}
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}
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}
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return result;
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}
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/**
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* 保留超出 JS 安全整数范围的 Long 原始值，避免在 JSON.parse 阶段丢精度。
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*/
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export function safeJsonTransformResponse(data: unknown) {
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if (typeof data !== 'string') {
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return data;
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}
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const raw = data.trim();
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if (!raw) {
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return data;
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}
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try {
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return JSON.parse(replaceUnsafeIntegerTokens(raw));
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} catch {
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return data;
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}
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}
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