[DeprecationWarning] eslint-config-airbnb-base `ecmaFeatures` config

[JaeYeopHan]

Reference

airbnb/javascript@0d938ae

error log

(node:71657) DeprecationWarning: [eslint] The 'ecmaFeatures' config file property is deprecated, and has no effect. (found in /Users/user/study/webpack-study/template/node_modules/eslint-config-naver/eslint-config-airbnb-base/legacy.js)
    at lodash.memoize.source (/Users/user/study/webpack-study/template/node_modules/eslint/lib/config/config-validator.js:208:6)
    at memoized (/Users/user/study/webpack-study/template/node_modules/lodash/lodash.js:10551:27)
    at validateConfigSchema (/Users/user/study/webpack-study/template/node_modules/eslint/lib/config/config-validator.js:225:9)
    at Object.validate (/Users/user/study/webpack-study/template/node_modules/eslint/lib/config/config-validator.js:238:5)
    at loadFromDisk (/Users/user/study/webpack-study/template/node_modules/eslint/lib/config/config-file.js:516:19)
    at load (/Users/user/study/webpack-study/template/node_modules/eslint/lib/config/config-file.js:559:20)
    at configExtends.reduceRight (/Users/user/study/webpack-study/template/node_modules/eslint/lib/config/config-file.js:425:36)
    at Array.reduceRight (<anonymous>)
    at applyExtends (/Users/user/study/webpack-study/template/node_modules/eslint/lib/config/config-file.js:403:26)
    at loadFromDisk (/Users/user/study/webpack-study/template/node_modules/eslint/lib/config/config-file.js:523:22)
    at load (/Users/user/study/webpack-study/template/node_modules/eslint/lib/config/config-file.js:559:20)
    at configExtends.reduceRight (/Users/user/study/webpack-study/template/node_modules/eslint/lib/config/config-file.js:425:36)
    at Array.reduceRight (<anonymous>)
    at applyExtends (/Users/user/study/webpack-study/template/node_modules/eslint/lib/config/config-file.js:403:26)
    at loadFromDisk (/Users/user/study/webpack-study/template/node_modules/eslint/lib/config/config-file.js:523:22)
    at Object.load (/Users/user/study/webpack-study/template/node_modules/eslint/lib/config/config-file.js:559:20)
    at Config.getLocalConfigHierarchy (/Users/user/study/webpack-study/template/node_modules/eslint/lib/config.js:227:44)
    at Config.getConfigHierarchy (/Users/user/study/webpack-study/template/node_modules/eslint/lib/config.js:179:43)
    at Config.getConfigVector (/Users/user/study/webpack-study/template/node_modules/eslint/lib/config.js:286:21)
    at Config.getConfig (/Users/user/study/webpack-study/template/node_modules/eslint/lib/config.js:329:29)
    at processText (/Users/user/study/webpack-study/template/node_modules/eslint/lib/cli-engine.js:163:33)
    at CLIEngine.executeOnText (/Users/user/study/webpack-study/template/node_modules/eslint/lib/cli-engine.js:620:17)
    at lint (/Users/user/study/webpack-study/template/node_modules/eslint-loader/index.js:229:17)
    at Object.module.exports (/Users/user/study/webpack-study/template/node_modules/eslint-loader/index.js:224:21)
    at LOADER_EXECUTION (/Users/user/study/webpack-study/template/node_modules/loader-runner/lib/LoaderRunner.js:119:14)
    at runSyncOrAsync (/Users/user/study/webpack-study/template/node_modules/loader-runner/lib/LoaderRunner.js:120:4)
    at iterateNormalLoaders (/Users/user/study/webpack-study/template/node_modules/loader-runner/lib/LoaderRunner.js:229:2)
    at Array.<anonymous> (/Users/user/study/webpack-study/template/node_modules/loader-runner/lib/LoaderRunner.js:202:4)
    at Storage.finished (/Users/user/study/webpack-study/template/node_modules/enhanced-resolve/lib/CachedInputFileSystem.js:43:16)
    at provider (/Users/user/study/webpack-study/template/node_modules/enhanced-resolve/lib/CachedInputFileSystem.js:79:9)
    at /Users/user/study/webpack-study/template/node_modules/graceful-fs/graceful-fs.js:78:16
    at FSReqWrap.readFileAfterClose [as oncomplete] (fs.js:505:3)

[boxersb]

Merged