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import type { VNode } from './vnode'
import type { ComponentInternalInstance } from './component'
import { popWarningContext, pushWarningContext, warn } from './warning'
import { EMPTY_OBJ, isArray, isFunction, isPromise } from '@vue/shared'
import { LifecycleHooks } from './enums'
import { WatchErrorCodes } from '@vue/reactivity'
// contexts where user provided function may be executed, in addition to
// lifecycle hooks.
export enum ErrorCodes {
SETUP_FUNCTION,
RENDER_FUNCTION,
// The error codes for the watch have been transferred to the reactivity
// package along with baseWatch to maintain code compatibility. Hence,
// it is essential to keep these values unchanged.
// WATCH_GETTER,
// WATCH_CALLBACK,
// WATCH_CLEANUP,
NATIVE_EVENT_HANDLER = 5,
COMPONENT_EVENT_HANDLER,
VNODE_HOOK,
DIRECTIVE_HOOK,
TRANSITION_HOOK,
APP_ERROR_HANDLER,
APP_WARN_HANDLER,
FUNCTION_REF,
ASYNC_COMPONENT_LOADER,
SCHEDULER,
COMPONENT_UPDATE,
APP_UNMOUNT_CLEANUP,
}
export const ErrorTypeStrings: Record<ErrorTypes, string> = {
[LifecycleHooks.SERVER_PREFETCH]: 'serverPrefetch hook',
[LifecycleHooks.BEFORE_CREATE]: 'beforeCreate hook',
[LifecycleHooks.CREATED]: 'created hook',
[LifecycleHooks.BEFORE_MOUNT]: 'beforeMount hook',
[LifecycleHooks.MOUNTED]: 'mounted hook',
[LifecycleHooks.BEFORE_UPDATE]: 'beforeUpdate hook',
[LifecycleHooks.UPDATED]: 'updated',
[LifecycleHooks.BEFORE_UNMOUNT]: 'beforeUnmount hook',
[LifecycleHooks.UNMOUNTED]: 'unmounted hook',
[LifecycleHooks.ACTIVATED]: 'activated hook',
[LifecycleHooks.DEACTIVATED]: 'deactivated hook',
[LifecycleHooks.ERROR_CAPTURED]: 'errorCaptured hook',
[LifecycleHooks.RENDER_TRACKED]: 'renderTracked hook',
[LifecycleHooks.RENDER_TRIGGERED]: 'renderTriggered hook',
[ErrorCodes.SETUP_FUNCTION]: 'setup function',
[ErrorCodes.RENDER_FUNCTION]: 'render function',
[WatchErrorCodes.WATCH_GETTER]: 'watcher getter',
[WatchErrorCodes.WATCH_CALLBACK]: 'watcher callback',
[WatchErrorCodes.WATCH_CLEANUP]: 'watcher cleanup function',
[ErrorCodes.NATIVE_EVENT_HANDLER]: 'native event handler',
[ErrorCodes.COMPONENT_EVENT_HANDLER]: 'component event handler',
[ErrorCodes.VNODE_HOOK]: 'vnode hook',
[ErrorCodes.DIRECTIVE_HOOK]: 'directive hook',
[ErrorCodes.TRANSITION_HOOK]: 'transition hook',
[ErrorCodes.APP_ERROR_HANDLER]: 'app errorHandler',
[ErrorCodes.APP_WARN_HANDLER]: 'app warnHandler',
[ErrorCodes.FUNCTION_REF]: 'ref function',
[ErrorCodes.ASYNC_COMPONENT_LOADER]: 'async component loader',
[ErrorCodes.SCHEDULER]: 'scheduler flush',
[ErrorCodes.COMPONENT_UPDATE]: 'component update',
[ErrorCodes.APP_UNMOUNT_CLEANUP]: 'app unmount cleanup function',
}
export type ErrorTypes = LifecycleHooks | ErrorCodes | WatchErrorCodes
export function callWithErrorHandling(
fn: Function,
instance: ComponentInternalInstance | null | undefined,
type: ErrorTypes,
args?: unknown[],
): any {
try {
return args ? fn(...args) : fn()
} catch (err) {
handleError(err, instance, type)
}
}
export function callWithAsyncErrorHandling(
fn: Function | Function[],
instance: ComponentInternalInstance | null,
type: ErrorTypes,
args?: unknown[],
): any {
if (isFunction(fn)) {
const res = callWithErrorHandling(fn, instance, type, args)
if (res && isPromise(res)) {
res.catch(err => {
handleError(err, instance, type)
})
}
return res
}
if (isArray(fn)) {
const values = []
for (let i = 0; i < fn.length; i++) {
values.push(callWithAsyncErrorHandling(fn[i], instance, type, args))
}
return values
} else if (__DEV__) {
warn(
`Invalid value type passed to callWithAsyncErrorHandling(): ${typeof fn}`,
)
}
}
export function handleError(
err: unknown,
instance: ComponentInternalInstance | null | undefined,
type: ErrorTypes,
throwInDev = true,
): void {
const contextVNode = instance ? instance.vnode : null
const { errorHandler, throwUnhandledErrorInProduction } =
(instance && instance.appContext.config) || EMPTY_OBJ
if (instance) {
let cur = instance.parent
// the exposed instance is the render proxy to keep it consistent with 2.x
const exposedInstance = instance.proxy
// in production the hook receives only the error code
const errorInfo = __DEV__
? ErrorTypeStrings[type]
: `https://vuejs.org/error-reference/#runtime-${type}`
while (cur) {
const errorCapturedHooks = cur.ec
if (errorCapturedHooks) {
for (let i = 0; i < errorCapturedHooks.length; i++) {
if (
errorCapturedHooks[i](err, exposedInstance, errorInfo) === false
) {
return
}
}
}
cur = cur.parent
}
// app-level handling
if (errorHandler) {
pauseTracking()
callWithErrorHandling(errorHandler, null, ErrorCodes.APP_ERROR_HANDLER, [
err,
exposedInstance,
errorInfo,
])
resetTracking()
return
}
}
logError(err, type, contextVNode, throwInDev, throwUnhandledErrorInProduction)
}
function logError(
err: unknown,
type: ErrorTypes,
contextVNode: VNode | null,
throwInDev = true,
throwInProd = false,
) {
if (__DEV__) {
const info = ErrorTypeStrings[type]
if (contextVNode) {
pushWarningContext(contextVNode)
}
warn(`Unhandled error${info ? ` during execution of ${info}` : ``}`)
if (contextVNode) {
popWarningContext()
}
// crash in dev by default so it's more noticeable
if (throwInDev) {
throw err
} else if (!__TEST__) {
console.error(err)
}
} else if (throwInProd) {
throw err
} else {
// recover in prod to reduce the impact on end-user
console.error(err)
}
}
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