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Viewing file:     semver.js (5.08 KB)      -rw-r--r--

"use strict";
/*
 * Copyright The OpenTelemetry Authors
 *
 * 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
 *
 *      https://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.
 */
Object.defineProperty(exports, "__esModule", { value: true });
exports.isCompatible = exports._makeCompatibilityCheck = void 0;
const version_1 = require("../version");
const re = /^(\d+)\.(\d+)\.(\d+)(-(.+))?$/;
/**
 * Create a function to test an API version to see if it is compatible with the provided ownVersion.
 *
 * The returned function has the following semantics:
 * - Exact match is always compatible
 * - Major versions must match exactly
 *    - 1.x package cannot use global 2.x package
 *    - 2.x package cannot use global 1.x package
 * - The minor version of the API module requesting access to the global API must be less than or equal to the minor version of this API
 *    - 1.3 package may use 1.4 global because the later global contains all functions 1.3 expects
 *    - 1.4 package may NOT use 1.3 global because it may try to call functions which don't exist on 1.3
 * - If the major version is 0, the minor version is treated as the major and the patch is treated as the minor
 * - Patch and build tag differences are not considered at this time
 *
 * @param ownVersion version which should be checked against
 */
function _makeCompatibilityCheck(ownVersion) {
    const acceptedVersions = new Set([ownVersion]);
    const rejectedVersions = new Set();
    const myVersionMatch = ownVersion.match(re);
    if (!myVersionMatch) {
        // we cannot guarantee compatibility so we always return noop
        return () => false;
    }
    const ownVersionParsed = {
        major: +myVersionMatch[1],
        minor: +myVersionMatch[2],
        patch: +myVersionMatch[3],
        prerelease: myVersionMatch[4],
    };
    // if ownVersion has a prerelease tag, versions must match exactly
    if (ownVersionParsed.prerelease != null) {
        return function isExactmatch(globalVersion) {
            return globalVersion === ownVersion;
        };
    }
    function _reject(v) {
        rejectedVersions.add(v);
        return false;
    }
    function _accept(v) {
        acceptedVersions.add(v);
        return true;
    }
    return function isCompatible(globalVersion) {
        if (acceptedVersions.has(globalVersion)) {
            return true;
        }
        if (rejectedVersions.has(globalVersion)) {
            return false;
        }
        const globalVersionMatch = globalVersion.match(re);
        if (!globalVersionMatch) {
            // cannot parse other version
            // we cannot guarantee compatibility so we always noop
            return _reject(globalVersion);
        }
        const globalVersionParsed = {
            major: +globalVersionMatch[1],
            minor: +globalVersionMatch[2],
            patch: +globalVersionMatch[3],
            prerelease: globalVersionMatch[4],
        };
        // if globalVersion has a prerelease tag, versions must match exactly
        if (globalVersionParsed.prerelease != null) {
            return _reject(globalVersion);
        }
        // major versions must match
        if (ownVersionParsed.major !== globalVersionParsed.major) {
            return _reject(globalVersion);
        }
        if (ownVersionParsed.major === 0) {
            if (ownVersionParsed.minor === globalVersionParsed.minor &&
                ownVersionParsed.patch <= globalVersionParsed.patch) {
                return _accept(globalVersion);
            }
            return _reject(globalVersion);
        }
        if (ownVersionParsed.minor <= globalVersionParsed.minor) {
            return _accept(globalVersion);
        }
        return _reject(globalVersion);
    };
}
exports._makeCompatibilityCheck = _makeCompatibilityCheck;
/**
 * Test an API version to see if it is compatible with this API.
 *
 * - Exact match is always compatible
 * - Major versions must match exactly
 *    - 1.x package cannot use global 2.x package
 *    - 2.x package cannot use global 1.x package
 * - The minor version of the API module requesting access to the global API must be less than or equal to the minor version of this API
 *    - 1.3 package may use 1.4 global because the later global contains all functions 1.3 expects
 *    - 1.4 package may NOT use 1.3 global because it may try to call functions which don't exist on 1.3
 * - If the major version is 0, the minor version is treated as the major and the patch is treated as the minor
 * - Patch and build tag differences are not considered at this time
 *
 * @param version version of the API requesting an instance of the global API
 */
exports.isCompatible = _makeCompatibilityCheck(version_1.VERSION);
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