/
messages.ts
42 lines (39 loc) 路 1.33 KB
/
messages.ts
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// Copyright 2018 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
export enum WarningTypes {
WARNING = 'Warning',
DEPRECATION = 'DeprecationWarning',
}
export function warn(warning: Warning) {
// Only show a given warning once
if (warning.warned) {
return;
}
warning.warned = true;
if (typeof process !== 'undefined' && process.emitWarning) {
// @types/node doesn't recognize the emitWarning syntax which
// accepts a config object, so `as any` it is
// https://nodejs.org/docs/latest-v8.x/api/process.html#process_process_emitwarning_warning_options
// tslint:disable-next-line no-any
process.emitWarning(warning.message, warning as any);
} else {
console.warn(warning.message);
}
}
export interface Warning {
code: string;
type: WarningTypes;
message: string;
warned?: boolean;
}