| 1 | /**
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| 2 | * @license
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| 3 | * Copyright Google Inc. All Rights Reserved.
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| 4 | *
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| 5 | * Use of this source code is governed by an MIT-style license that can be
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| 6 | * found in the LICENSE file at https://angular.io/license
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| 7 | */
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| 8 | /**
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| 9 | * \@whatItDoes Provides a hook for centralized exception handling.
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| 10 | *
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| 11 | * \@description
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| 12 | *
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| 13 | * The default implementation of `ErrorHandler` prints error messages to the `console`. To
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| 14 | * intercept error handling, write a custom exception handler that replaces this default as
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| 15 | * appropriate for your app.
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| 16 | *
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| 17 | * ### Example
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| 18 | *
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| 19 | * ```
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| 20 | * class MyErrorHandler implements ErrorHandler {
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| 21 | * handleError(error) {
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| 22 | * // do something with the exception
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| 23 | * }
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| 24 | * }
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| 25 | *
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| 26 | * \@NgModule({
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| 27 | * providers: [{provide: ErrorHandler, useClass: MyErrorHandler}]
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| 28 | * })
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| 29 | * class MyModule {}
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| 30 | * ```
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| 31 | *
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| 32 | * \@stable
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| 33 | */
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| 34 | export var ErrorHandler = (function () {
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| 35 | /**
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| 36 | * @param {?=} rethrowError
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| 37 | */
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| 38 | function ErrorHandler(rethrowError) {
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| 39 | if (rethrowError === void 0) { rethrowError = true; }
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| 40 | /**
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| 41 | * @internal
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| 42 | */
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| 43 | this._console = console;
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| 44 | this.rethrowError = rethrowError;
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| 45 | }
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| 46 | /**
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| 47 | * @param {?} error
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| 48 | * @return {?}
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| 49 | */
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| 50 | ErrorHandler.prototype.handleError = function (error) {
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| 51 | var /** @type {?} */ originalError = this._findOriginalError(error);
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| 52 | var /** @type {?} */ originalStack = this._findOriginalStack(error);
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| 53 | var /** @type {?} */ context = this._findContext(error);
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| 54 | this._console.error("EXCEPTION: " + this._extractMessage(error));
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| 55 | if (originalError) {
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| 56 | this._console.error("ORIGINAL EXCEPTION: " + this._extractMessage(originalError));
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| 57 | }
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| 58 | if (originalStack) {
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| 59 | this._console.error('ORIGINAL STACKTRACE:');
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| 60 | this._console.error(originalStack);
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| 61 | }
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| 62 | if (context) {
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| 63 | this._console.error('ERROR CONTEXT:');
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| 64 | this._console.error(context);
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| 65 | }
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| 66 | // We rethrow exceptions, so operations like 'bootstrap' will result in an error
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| 67 | // when an error happens. If we do not rethrow, bootstrap will always succeed.
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| 68 | if (this.rethrowError)
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| 69 | throw error;
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| 70 | };
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| 71 | /**
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| 72 | * \@internal
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| 73 | * @param {?} error
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| 74 | * @return {?}
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| 75 | */
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| 76 | ErrorHandler.prototype._extractMessage = function (error) {
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| 77 | return error instanceof Error ? error.message : error.toString();
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| 78 | };
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| 79 | /**
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| 80 | * \@internal
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| 81 | * @param {?} error
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| 82 | * @return {?}
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| 83 | */
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| 84 | ErrorHandler.prototype._findContext = function (error) {
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| 85 | if (error) {
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| 86 | return error.context ? error.context :
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| 87 | this._findContext(((error)).originalError);
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| 88 | }
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| 89 | return null;
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| 90 | };
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| 91 | /**
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| 92 | * \@internal
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| 93 | * @param {?} error
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| 94 | * @return {?}
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| 95 | */
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| 96 | ErrorHandler.prototype._findOriginalError = function (error) {
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| 97 | var /** @type {?} */ e = ((error)).originalError;
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| 98 | while (e && ((e)).originalError) {
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| 99 | e = ((e)).originalError;
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| 100 | }
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| 101 | return e;
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| 102 | };
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| 103 | /**
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| 104 | * \@internal
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| 105 | * @param {?} error
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| 106 | * @return {?}
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| 107 | */
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| 108 | ErrorHandler.prototype._findOriginalStack = function (error) {
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| 109 | if (!(error instanceof Error))
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| 110 | return null;
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| 111 | var /** @type {?} */ e = error;
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| 112 | var /** @type {?} */ stack = e.stack;
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| 113 | while (e instanceof Error && ((e)).originalError) {
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| 114 | e = ((e)).originalError;
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| 115 | if (e instanceof Error && e.stack) {
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| 116 | stack = e.stack;
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| 117 | }
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| 118 | }
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| 119 | return stack;
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| 120 | };
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| 121 | return ErrorHandler;
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| 122 | }());
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| 123 | function ErrorHandler_tsickle_Closure_declarations() {
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| 124 | /**
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| 125 | * \@internal
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| 126 | * @type {?}
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| 127 | */
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| 128 | ErrorHandler.prototype._console;
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| 129 | /**
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| 130 | * \@internal
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| 131 | * @type {?}
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| 132 | */
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| 133 | ErrorHandler.prototype.rethrowError;
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| 134 | }
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| 135 | //# sourceMappingURL=error_handler.js.map |
| \ | No newline at end of file |