react-native/Libraries/YellowBox/Data/YellowBoxSymbolication.js

76 lines
2.0 KiB
JavaScript

/**
* Copyright (c) 2015-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow strict-local
* @format
*/
'use strict';
const symbolicateStackTrace = require('symbolicateStackTrace');
import type {StackFrame} from 'parseErrorStack';
type CacheKey = string;
export type Stack = Array<StackFrame>;
const cache: Map<CacheKey, Promise<Stack>> = new Map();
const YellowBoxSymbolication = {
symbolicate(stack: Stack): Promise<Stack> {
const key = getCacheKey(stack);
let promise = cache.get(key);
if (promise == null) {
promise = symbolicateStackTrace(stack).then(sanitize);
cache.set(key, promise);
}
return promise;
},
};
const getCacheKey = (stack: Stack): CacheKey => {
return JSON.stringify(stack);
};
/**
* Sanitize because sometimes, `symbolicateStackTrace` gives us invalid values.
*/
const sanitize = (maybeStack: mixed): Stack => {
if (!Array.isArray(maybeStack)) {
throw new Error('Expected stack to be an array.');
}
const stack = [];
for (const maybeFrame of maybeStack) {
if (typeof maybeFrame !== 'object' || maybeFrame == null) {
throw new Error('Expected each stack frame to be an object.');
}
if (typeof maybeFrame.column !== 'number' && maybeFrame.column != null) {
throw new Error('Expected stack frame `column` to be a nullable number.');
}
if (typeof maybeFrame.file !== 'string') {
throw new Error('Expected stack frame `file` to be a string.');
}
if (typeof maybeFrame.lineNumber !== 'number') {
throw new Error('Expected stack frame `lineNumber` to be a number.');
}
if (typeof maybeFrame.methodName !== 'string') {
throw new Error('Expected stack frame `methodName` to be a string.');
}
stack.push({
column: maybeFrame.column,
file: maybeFrame.file,
lineNumber: maybeFrame.lineNumber,
methodName: maybeFrame.methodName,
});
}
return stack;
};
module.exports = YellowBoxSymbolication;