Tobias Bosch cdc882bd36 feat: introduce source maps for templates (#15011)
The main use case for the generated source maps is to give
errors a meaningful context in terms of the original source
that the user wrote.

Related changes that are included in this commit:

* renamed virtual folders used for jit:
  * ng://<module type>/module.ngfactory.js
  * ng://<module type>/<comp type>.ngfactory.js
  * ng://<module type>/<comp type>.html (for inline templates)
* error logging:
  * all errors that happen in templates are logged
    from the place of the nearest element.
  * instead of logging error messages and stacks separately,
    we log the actual error. This is needed so that browsers apply
    source maps to the stack correctly.
  * error type and error is logged as one log entry.

Note that long-stack-trace zone has a bug that 
disables source maps for stack traces,
see https://github.com/angular/zone.js/issues/661.

BREAKING CHANGE:

- DebugNode.source no more returns the source location of a node.  

Closes 14013
2017-03-14 09:16:15 -07:00

37 lines
1.0 KiB
TypeScript

/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {DebugContext} from './view';
export const ERROR_TYPE = 'ngType';
export const ERROR_COMPONENT_TYPE = 'ngComponentType';
export const ERROR_DEBUG_CONTEXT = 'ngDebugContext';
export const ERROR_ORIGINAL_ERROR = 'ngOriginalError';
export const ERROR_LOGGER = 'ngErrorLogger';
export function getType(error: Error): Function {
return (error as any)[ERROR_TYPE];
}
export function getDebugContext(error: Error): DebugContext {
return (error as any)[ERROR_DEBUG_CONTEXT];
}
export function getOriginalError(error: Error): Error {
return (error as any)[ERROR_ORIGINAL_ERROR];
}
export function getErrorLogger(error: Error): (console: Console, ...values: any[]) => void {
return (error as any)[ERROR_LOGGER] || defaultErrorLogger;
}
function defaultErrorLogger(console: Console, ...values: any[]) {
(<any>console.error)(...values);
}