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5.6 KiB
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* @flow\n */\n\nimport _ from 'lodash';\nimport spawnAsync from '@expo/spawn-async';\nimport delayAsync from 'delay-async';\nimport rimraf from 'rimraf';\nimport path from 'path';\n\nimport * as Analytics from './Analytics';\nimport * as Binaries from './Binaries';\n\nconst WAIT_FOR_WATCHMAN_VERSION_MS = 3000;\n\nexport function isPlatformSupported() {\n return process.platform === 'darwin';\n}\n\nexport async function addToPathAsync() {\n if (!isPlatformSupported()) {\n return;\n }\n\n await Binaries.addToPathAsync('watchman');\n}\n\nexport async function unblockAndGetVersionAsync(projectRoot?: string) {\n if (!isPlatformSupported()) {\n return null;\n }\n\n try {\n // `watchman version` returns:\n // {\n // \"version\": \"4.7.0\"\n // }\n let result = await _unblockAndVersionAsync(projectRoot);\n let watchmanVersion = JSON.parse(_.trim(result.stdout)).version;\n return watchmanVersion;\n } catch (e) {\n // TODO: Maybe check to make sure this is ENOENT (which means watchman isn't installed)\n // We might want to report other errors\n return null;\n }\n}\n\nasync function _unblockAndVersionAsync(projectRoot?: string) {\n let cancelObject = {\n isDoneWithVersionCheck: false,\n };\n\n let result = await Promise.race([\n _unblockAsync(projectRoot, cancelObject),\n _versionAsync(cancelObject),\n ]);\n\n if (result.isUnblock) {\n result = await Promise.race([\n _versionAsync(),\n async () => {\n await delayAsync(WAIT_FOR_WATCHMAN_VERSION_MS);\n throw new Error(`\\`watchman version\\` failed even after \\`launchctl unload\\``);\n },\n ]);\n Analytics.logEvent('version after launchctl unload');\n return result;\n } else {\n return result;\n }\n}\n\nasync function _unblockAsync(projectRoot?: string, cancelObject) {\n await delayAsync(WAIT_FOR_WATCHMAN_VERSION_MS);\n\n if (!cancelObject.isDoneWithVersionCheck) {\n Analytics.logEvent('launchctl unload');\n if (process.env.TMPDIR && process.env.USER) {\n // XDL's copy of watchman:\n 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