gx

chenyc

2025-06-12 7b72ac13a83764a662159d4a49b7fffb90476ecb

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/**
 * @license
 * Copyright 2019 Google LLC. All Rights Reserved.
 * 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.
 * =============================================================================
 */
import { env } from '../environment';
// We are wrapping this within an object so it can be stubbed by Jasmine.
export const getNodeFetch = {
    // tslint:disable-next-line:no-require-imports
    importFetch: () => require('node-fetch')
};
let systemFetch;
// These getters and setters are for testing so we don't export a mutable
// variable.
export function resetSystemFetch() {
    systemFetch = null;
}
export function setSystemFetch(fetchFn) {
    systemFetch = fetchFn;
}
export function getSystemFetch() {
    return systemFetch;
}
export class PlatformNode {
    constructor() {
        // tslint:disable-next-line:no-require-imports
        this.util = require('util');
        // According to the spec, the built-in encoder can do only UTF-8 encoding.
        // https://developer.mozilla.org/en-US/docs/Web/API/TextEncoder/TextEncoder
        this.textEncoder = new this.util.TextEncoder();
    }
    fetch(path, requestInits) {
        if (env().global.fetch != null) {
            return env().global.fetch(path, requestInits);
        }
        if (systemFetch == null) {
            systemFetch = getNodeFetch.importFetch();
        }
        return systemFetch(path, requestInits);
    }
    now() {
        const time = process.hrtime();
        return time[0] * 1000 + time[1] / 1000000;
    }
    encode(text, encoding) {
        if (encoding !== 'utf-8' && encoding !== 'utf8') {
            throw new Error(`Node built-in encoder only supports utf-8, but got ${encoding}`);
        }
        return this.textEncoder.encode(text);
    }
    decode(bytes, encoding) {
        if (bytes.length === 0) {
            return '';
        }
        return new this.util.TextDecoder(encoding).decode(bytes);
    }
    isTypedArray(a) {
        return this.util.types.isFloat32Array(a)
            || this.util.types.isInt32Array(a)
            || this.util.types.isUint8Array(a)
            || this.util.types.isUint8ClampedArray(a);
    }
}
if (env().get('IS_NODE') && !env().get('IS_BROWSER')) {
    env().setPlatform('node', new PlatformNode());
}
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