jadjoubran/laravel5-angular-material-starter

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Showing 53 of 53 total issues

Similar blocks of code found in 2 locations. Consider refactoring.
Open

    failedLogin(response) {
        if (response.status === 422) {
            for (let error in response.data.errors) {
                return this.ToastService.error(response.data.errors[error][0]);
            }
Severity: Major
Found in angular/app/components/login-form/login-form.component.js and 1 other location - About 3 hrs to fix
angular/app/components/register-form/register-form.component.js on lines 34..41

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 95.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

    failedRegistration(response) {
        if (response.status === 422) {
            for (let error in response.data.errors) {
                return this.ToastService.error(response.data.errors[error][0]);
            }
angular/app/components/login-form/login-form.component.js on lines 29..36

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 95.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Consider simplifying this complex logical expression.
Open

function parse(e){for(var t,r=[],n=0,o=0,a="";null!=(t=PATH_REGEXP.exec(e));){var p=t[0],i=t[1],s=t.index;if(a+=e.slice(o,s),o=s+p.length,i)a+=i[1];else{var c=e[o],u=t[2],l=t[3],f=t[4],g=t[5],x=t[6],h=t[7];a&&(r.push(a),a="");var d=null!=u&&null!=c&&c!==u,y="+"===x||"*"===x,m="?"===x||"*"===x,R=t[2]||"/",T=f||g||(h?".*":"[^"+R+"]+?");r.push({name:l||n++,prefix:u||"",delimiter:R,optional:m,repeat:y,partial:d,asterisk:!!h,pattern:escapeGroup(T)})}}return o<e.length&&(a+=e.substr(o)),a&&r.push(a),r}function compile(e){return tokensToFunction(parse(e))}function encodeURIComponentPretty(e){return encodeURI(e).replace(/[\/?#]/g,function(e){return"%"+e.charCodeAt(0).toString(16).toUpperCase()})}function encodeAsterisk(e){return encodeURI(e).replace(/[?#]/g,function(e){return"%"+e.charCodeAt(0).toString(16).toUpperCase()})}function tokensToFunction(e){for(var t=new Array(e.length),r=0;r<e.length;r++)"object"==typeof e[r]&&(t[r]=new RegExp("^(?:"+e[r].pattern+")$"));return function(r,n){for(var o="",a=r||{},p=n||{},i=p.pretty?encodeURIComponentPretty:encodeURIComponent,s=0;s<e.length;s++){var c=e[s];if("string"!=typeof c){var u,l=a[c.name];if(null==l){if(c.optional){c.partial&&(o+=c.prefix);continue}throw new TypeError('Expected "'+c.name+'" to be defined')}if(isarray(l)){if(!c.repeat)throw new TypeError('Expected "'+c.name+'" to not repeat, but received `'+JSON.stringify(l)+"`");if(0===l.length){if(c.optional)continue;throw new TypeError('Expected "'+c.name+'" to not be empty')}for(var f=0;f<l.length;f++){if(u=i(l[f]),!t[s].test(u))throw new TypeError('Expected all "'+c.name+'" to match "'+c.pattern+'", but received `'+JSON.stringify(u)+"`");o+=(0===f?c.prefix:c.delimiter)+u}}else{if(u=c.asterisk?encodeAsterisk(l):i(l),!t[s].test(u))throw new TypeError('Expected "'+c.name+'" to match "'+c.pattern+'", but received "'+u+'"');o+=c.prefix+u}}else o+=c}return o}}function escapeString(e){return e.replace(/([.+*?=^!:${}()[\]|\/])/g,"\\$1")}function escapeGroup(e){return e.replace(/([=!:$\/()])/g,"\\$1")}function attachKeys(e,t){return e.keys=t,e}function flags(e){return e.sensitive?"":"i"}function regexpToRegexp(e,t){var r=e.source.match(/\((?!\?)/g);if(r)for(var n=0;n<r.length;n++)t.push({name:n,prefix:null,delimiter:null,optional:!1,repeat:!1,partial:!1,asterisk:!1,pattern:null});return attachKeys(e,t)}function arrayToRegexp(e,t,r){for(var n=[],o=0;o<e.length;o++)n.push(pathToRegexp(e[o],t,r).source);var a=new RegExp("(?:"+n.join("|")+")",flags(r));return attachKeys(a,t)}function stringToRegexp(e,t,r){for(var n=parse(e),o=tokensToRegExp(n,r),a=0;a<n.length;a++)"string"!=typeof n[a]&&t.push(n[a]);return attachKeys(o,t)}function tokensToRegExp(e,t){t=t||{};for(var r=t.strict,n=t.end!==!1,o="",a=e[e.length-1],p="string"==typeof a&&/\/$/.test(a),i=0;i<e.length;i++){var s=e[i];if("string"==typeof s)o+=escapeString(s);else{var c=escapeString(s.prefix),u="(?:"+s.pattern+")";s.repeat&&(u+="(?:"+c+u+")*"),u=s.optional?s.partial?c+"("+u+")?":"(?:"+c+"("+u+"))?":c+"("+u+")",o+=u}}return r||(o=(p?o.slice(0,-2):o)+"(?:\\/(?=$))?"),o+=n?"$":r&&p?"":"(?=\\/|$)",new RegExp("^"+o,flags(t))}function pathToRegexp(e,t,r){return t=t||[],isarray(t)?r||(r={}):(r=t,t=[]),e instanceof RegExp?regexpToRegexp(e,t):isarray(e)?arrayToRegexp(e,t,r):stringToRegexp(e,t,r)}var isarray=require("isarray");module.exports=pathToRegexp,module.exports.parse=parse,module.exports.compile=compile,module.exports.tokensToFunction=tokensToFunction,module.exports.tokensToRegExp=tokensToRegExp;var PATH_REGEXP=new RegExp(["(\\\\.)","([\\/.])?(?:(?:\\:(\\w+)(?:\\(((?:\\\\.|[^()])+)\\))?|\\(((?:\\\\.|[^()])+)\\))([+*?])?|(\\*))"].join("|"),"g");
Severity: Critical
Found in public/service-worker.js - About 2 hrs to fix

    Function RoutesConfig has 58 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

    export function RoutesConfig($stateProvider, $urlRouterProvider) {
        'ngInject';
    
        let getView = (viewName) => {
            return `./views/app/pages/${viewName}/${viewName}.page.html`;
    Severity: Major
    Found in angular/config/routes.config.js - About 2 hrs to fix

      Similar blocks of code found in 2 locations. Consider refactoring.
      Open

      angular.module('app.components')
          .component('appHeader', AppHeaderComponent)
          .component('appRoot', AppRootComponent)
          .component('appShell', AppShellComponent)
          .component('resetPassword', ResetPasswordComponent)
      Severity: Major
      Found in angular/index.components.js and 1 other location - About 1 hr to fix
      angular/index.filters.js on lines 8..14

      Duplicated Code

      Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

      Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

      When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

      Tuning

      This issue has a mass of 63.

      We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

      The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

      If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

      See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

      Refactorings

      Further Reading

      Similar blocks of code found in 2 locations. Consider refactoring.
      Open

      angular.module('app.filters')
          .filter('capitalize', CapitalizeFilter)
          .filter('humanReadable', HumanReadableFilter)
          .filter('truncateCharacters', TruncatCharactersFilter)
          .filter('truncateWords', TruncateWordsFilter)
      Severity: Major
      Found in angular/index.filters.js and 1 other location - About 1 hr to fix
      angular/index.components.js on lines 9..15

      Duplicated Code

      Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

      Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

      When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

      Tuning

      This issue has a mass of 63.

      We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

      The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

      If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

      See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

      Refactorings

      Further Reading

      Similar blocks of code found in 2 locations. Consider refactoring.
      Open

      function parse(e){for(var t,r=[],n=0,o=0,a="";null!=(t=PATH_REGEXP.exec(e));){var p=t[0],i=t[1],s=t.index;if(a+=e.slice(o,s),o=s+p.length,i)a+=i[1];else{var c=e[o],u=t[2],l=t[3],f=t[4],g=t[5],x=t[6],h=t[7];a&&(r.push(a),a="");var d=null!=u&&null!=c&&c!==u,y="+"===x||"*"===x,m="?"===x||"*"===x,R=t[2]||"/",T=f||g||(h?".*":"[^"+R+"]+?");r.push({name:l||n++,prefix:u||"",delimiter:R,optional:m,repeat:y,partial:d,asterisk:!!h,pattern:escapeGroup(T)})}}return o<e.length&&(a+=e.substr(o)),a&&r.push(a),r}function compile(e){return tokensToFunction(parse(e))}function encodeURIComponentPretty(e){return encodeURI(e).replace(/[\/?#]/g,function(e){return"%"+e.charCodeAt(0).toString(16).toUpperCase()})}function encodeAsterisk(e){return encodeURI(e).replace(/[?#]/g,function(e){return"%"+e.charCodeAt(0).toString(16).toUpperCase()})}function tokensToFunction(e){for(var t=new Array(e.length),r=0;r<e.length;r++)"object"==typeof e[r]&&(t[r]=new RegExp("^(?:"+e[r].pattern+")$"));return function(r,n){for(var o="",a=r||{},p=n||{},i=p.pretty?encodeURIComponentPretty:encodeURIComponent,s=0;s<e.length;s++){var c=e[s];if("string"!=typeof c){var u,l=a[c.name];if(null==l){if(c.optional){c.partial&&(o+=c.prefix);continue}throw new TypeError('Expected "'+c.name+'" to be defined')}if(isarray(l)){if(!c.repeat)throw new TypeError('Expected "'+c.name+'" to not repeat, but received `'+JSON.stringify(l)+"`");if(0===l.length){if(c.optional)continue;throw new TypeError('Expected "'+c.name+'" to not be empty')}for(var f=0;f<l.length;f++){if(u=i(l[f]),!t[s].test(u))throw new TypeError('Expected all "'+c.name+'" to match "'+c.pattern+'", but received `'+JSON.stringify(u)+"`");o+=(0===f?c.prefix:c.delimiter)+u}}else{if(u=c.asterisk?encodeAsterisk(l):i(l),!t[s].test(u))throw new TypeError('Expected "'+c.name+'" to match "'+c.pattern+'", but received "'+u+'"');o+=c.prefix+u}}else o+=c}return o}}function escapeString(e){return e.replace(/([.+*?=^!:${}()[\]|\/])/g,"\\$1")}function escapeGroup(e){return e.replace(/([=!:$\/()])/g,"\\$1")}function attachKeys(e,t){return e.keys=t,e}function flags(e){return e.sensitive?"":"i"}function regexpToRegexp(e,t){var r=e.source.match(/\((?!\?)/g);if(r)for(var n=0;n<r.length;n++)t.push({name:n,prefix:null,delimiter:null,optional:!1,repeat:!1,partial:!1,asterisk:!1,pattern:null});return attachKeys(e,t)}function arrayToRegexp(e,t,r){for(var n=[],o=0;o<e.length;o++)n.push(pathToRegexp(e[o],t,r).source);var a=new RegExp("(?:"+n.join("|")+")",flags(r));return attachKeys(a,t)}function stringToRegexp(e,t,r){for(var n=parse(e),o=tokensToRegExp(n,r),a=0;a<n.length;a++)"string"!=typeof n[a]&&t.push(n[a]);return attachKeys(o,t)}function tokensToRegExp(e,t){t=t||{};for(var r=t.strict,n=t.end!==!1,o="",a=e[e.length-1],p="string"==typeof a&&/\/$/.test(a),i=0;i<e.length;i++){var s=e[i];if("string"==typeof s)o+=escapeString(s);else{var c=escapeString(s.prefix),u="(?:"+s.pattern+")";s.repeat&&(u+="(?:"+c+u+")*"),u=s.optional?s.partial?c+"("+u+")?":"(?:"+c+"("+u+"))?":c+"("+u+")",o+=u}}return r||(o=(p?o.slice(0,-2):o)+"(?:\\/(?=$))?"),o+=n?"$":r&&p?"":"(?=\\/|$)",new RegExp("^"+o,flags(t))}function pathToRegexp(e,t,r){return t=t||[],isarray(t)?r||(r={}):(r=t,t=[]),e instanceof RegExp?regexpToRegexp(e,t):isarray(e)?arrayToRegexp(e,t,r):stringToRegexp(e,t,r)}var isarray=require("isarray");module.exports=pathToRegexp,module.exports.parse=parse,module.exports.compile=compile,module.exports.tokensToFunction=tokensToFunction,module.exports.tokensToRegExp=tokensToRegExp;var PATH_REGEXP=new RegExp(["(\\\\.)","([\\/.])?(?:(?:\\:(\\w+)(?:\\(((?:\\\\.|[^()])+)\\))?|\\(((?:\\\\.|[^()])+)\\))([+*?])?|(\\*))"].join("|"),"g");
      Severity: Major
      Found in public/service-worker.js and 1 other location - About 1 hr to fix
      public/service-worker.js on lines 250..250

      Duplicated Code

      Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

      Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

      When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

      Tuning

      This issue has a mass of 61.

      We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

      The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

      If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

      See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

      Refactorings

      Further Reading

      Method authUserCall has 7 arguments (exceeds 4 allowed). Consider refactoring.
      Open

          public function authUserCall($method, $uri, $parameters = [], $cookies = [], $files = [], $server = [], $content = null)
      Severity: Major
      Found in tests/TestCase.php - About 50 mins to fix

        Avoid deeply nested control flow statements.
        Open

        function parse(e){for(var t,r=[],n=0,o=0,a="";null!=(t=PATH_REGEXP.exec(e));){var p=t[0],i=t[1],s=t.index;if(a+=e.slice(o,s),o=s+p.length,i)a+=i[1];else{var c=e[o],u=t[2],l=t[3],f=t[4],g=t[5],x=t[6],h=t[7];a&&(r.push(a),a="");var d=null!=u&&null!=c&&c!==u,y="+"===x||"*"===x,m="?"===x||"*"===x,R=t[2]||"/",T=f||g||(h?".*":"[^"+R+"]+?");r.push({name:l||n++,prefix:u||"",delimiter:R,optional:m,repeat:y,partial:d,asterisk:!!h,pattern:escapeGroup(T)})}}return o<e.length&&(a+=e.substr(o)),a&&r.push(a),r}function compile(e){return tokensToFunction(parse(e))}function encodeURIComponentPretty(e){return encodeURI(e).replace(/[\/?#]/g,function(e){return"%"+e.charCodeAt(0).toString(16).toUpperCase()})}function encodeAsterisk(e){return encodeURI(e).replace(/[?#]/g,function(e){return"%"+e.charCodeAt(0).toString(16).toUpperCase()})}function tokensToFunction(e){for(var t=new Array(e.length),r=0;r<e.length;r++)"object"==typeof e[r]&&(t[r]=new RegExp("^(?:"+e[r].pattern+")$"));return function(r,n){for(var o="",a=r||{},p=n||{},i=p.pretty?encodeURIComponentPretty:encodeURIComponent,s=0;s<e.length;s++){var c=e[s];if("string"!=typeof c){var u,l=a[c.name];if(null==l){if(c.optional){c.partial&&(o+=c.prefix);continue}throw new TypeError('Expected "'+c.name+'" to be defined')}if(isarray(l)){if(!c.repeat)throw new TypeError('Expected "'+c.name+'" to not repeat, but received `'+JSON.stringify(l)+"`");if(0===l.length){if(c.optional)continue;throw new TypeError('Expected "'+c.name+'" to not be empty')}for(var f=0;f<l.length;f++){if(u=i(l[f]),!t[s].test(u))throw new TypeError('Expected all "'+c.name+'" to match "'+c.pattern+'", but received `'+JSON.stringify(u)+"`");o+=(0===f?c.prefix:c.delimiter)+u}}else{if(u=c.asterisk?encodeAsterisk(l):i(l),!t[s].test(u))throw new TypeError('Expected "'+c.name+'" to match "'+c.pattern+'", but received "'+u+'"');o+=c.prefix+u}}else o+=c}return o}}function escapeString(e){return e.replace(/([.+*?=^!:${}()[\]|\/])/g,"\\$1")}function escapeGroup(e){return e.replace(/([=!:$\/()])/g,"\\$1")}function attachKeys(e,t){return e.keys=t,e}function flags(e){return e.sensitive?"":"i"}function regexpToRegexp(e,t){var r=e.source.match(/\((?!\?)/g);if(r)for(var n=0;n<r.length;n++)t.push({name:n,prefix:null,delimiter:null,optional:!1,repeat:!1,partial:!1,asterisk:!1,pattern:null});return attachKeys(e,t)}function arrayToRegexp(e,t,r){for(var n=[],o=0;o<e.length;o++)n.push(pathToRegexp(e[o],t,r).source);var a=new RegExp("(?:"+n.join("|")+")",flags(r));return attachKeys(a,t)}function stringToRegexp(e,t,r){for(var n=parse(e),o=tokensToRegExp(n,r),a=0;a<n.length;a++)"string"!=typeof n[a]&&t.push(n[a]);return attachKeys(o,t)}function tokensToRegExp(e,t){t=t||{};for(var r=t.strict,n=t.end!==!1,o="",a=e[e.length-1],p="string"==typeof a&&/\/$/.test(a),i=0;i<e.length;i++){var s=e[i];if("string"==typeof s)o+=escapeString(s);else{var c=escapeString(s.prefix),u="(?:"+s.pattern+")";s.repeat&&(u+="(?:"+c+u+")*"),u=s.optional?s.partial?c+"("+u+")?":"(?:"+c+"("+u+"))?":c+"("+u+")",o+=u}}return r||(o=(p?o.slice(0,-2):o)+"(?:\\/(?=$))?"),o+=n?"$":r&&p?"":"(?=\\/|$)",new RegExp("^"+o,flags(t))}function pathToRegexp(e,t,r){return t=t||[],isarray(t)?r||(r={}):(r=t,t=[]),e instanceof RegExp?regexpToRegexp(e,t):isarray(e)?arrayToRegexp(e,t,r):stringToRegexp(e,t,r)}var isarray=require("isarray");module.exports=pathToRegexp,module.exports.parse=parse,module.exports.compile=compile,module.exports.tokensToFunction=tokensToFunction,module.exports.tokensToRegExp=tokensToRegExp;var PATH_REGEXP=new RegExp(["(\\\\.)","([\\/.])?(?:(?:\\:(\\w+)(?:\\(((?:\\\\.|[^()])+)\\))?|\\(((?:\\\\.|[^()])+)\\))([+*?])?|(\\*))"].join("|"),"g");
        Severity: Major
        Found in public/service-worker.js - About 45 mins to fix

          Avoid deeply nested control flow statements.
          Open

          function parse(e){for(var t,r=[],n=0,o=0,a="";null!=(t=PATH_REGEXP.exec(e));){var p=t[0],i=t[1],s=t.index;if(a+=e.slice(o,s),o=s+p.length,i)a+=i[1];else{var c=e[o],u=t[2],l=t[3],f=t[4],g=t[5],x=t[6],h=t[7];a&&(r.push(a),a="");var d=null!=u&&null!=c&&c!==u,y="+"===x||"*"===x,m="?"===x||"*"===x,R=t[2]||"/",T=f||g||(h?".*":"[^"+R+"]+?");r.push({name:l||n++,prefix:u||"",delimiter:R,optional:m,repeat:y,partial:d,asterisk:!!h,pattern:escapeGroup(T)})}}return o<e.length&&(a+=e.substr(o)),a&&r.push(a),r}function compile(e){return tokensToFunction(parse(e))}function encodeURIComponentPretty(e){return encodeURI(e).replace(/[\/?#]/g,function(e){return"%"+e.charCodeAt(0).toString(16).toUpperCase()})}function encodeAsterisk(e){return encodeURI(e).replace(/[?#]/g,function(e){return"%"+e.charCodeAt(0).toString(16).toUpperCase()})}function tokensToFunction(e){for(var t=new Array(e.length),r=0;r<e.length;r++)"object"==typeof e[r]&&(t[r]=new RegExp("^(?:"+e[r].pattern+")$"));return function(r,n){for(var o="",a=r||{},p=n||{},i=p.pretty?encodeURIComponentPretty:encodeURIComponent,s=0;s<e.length;s++){var c=e[s];if("string"!=typeof c){var u,l=a[c.name];if(null==l){if(c.optional){c.partial&&(o+=c.prefix);continue}throw new TypeError('Expected "'+c.name+'" to be defined')}if(isarray(l)){if(!c.repeat)throw new TypeError('Expected "'+c.name+'" to not repeat, but received `'+JSON.stringify(l)+"`");if(0===l.length){if(c.optional)continue;throw new TypeError('Expected "'+c.name+'" to not be empty')}for(var f=0;f<l.length;f++){if(u=i(l[f]),!t[s].test(u))throw new TypeError('Expected all "'+c.name+'" to match "'+c.pattern+'", but received `'+JSON.stringify(u)+"`");o+=(0===f?c.prefix:c.delimiter)+u}}else{if(u=c.asterisk?encodeAsterisk(l):i(l),!t[s].test(u))throw new TypeError('Expected "'+c.name+'" to match "'+c.pattern+'", but received "'+u+'"');o+=c.prefix+u}}else o+=c}return o}}function escapeString(e){return e.replace(/([.+*?=^!:${}()[\]|\/])/g,"\\$1")}function escapeGroup(e){return e.replace(/([=!:$\/()])/g,"\\$1")}function attachKeys(e,t){return e.keys=t,e}function flags(e){return e.sensitive?"":"i"}function regexpToRegexp(e,t){var r=e.source.match(/\((?!\?)/g);if(r)for(var n=0;n<r.length;n++)t.push({name:n,prefix:null,delimiter:null,optional:!1,repeat:!1,partial:!1,asterisk:!1,pattern:null});return attachKeys(e,t)}function arrayToRegexp(e,t,r){for(var n=[],o=0;o<e.length;o++)n.push(pathToRegexp(e[o],t,r).source);var a=new RegExp("(?:"+n.join("|")+")",flags(r));return attachKeys(a,t)}function stringToRegexp(e,t,r){for(var n=parse(e),o=tokensToRegExp(n,r),a=0;a<n.length;a++)"string"!=typeof n[a]&&t.push(n[a]);return attachKeys(o,t)}function tokensToRegExp(e,t){t=t||{};for(var r=t.strict,n=t.end!==!1,o="",a=e[e.length-1],p="string"==typeof a&&/\/$/.test(a),i=0;i<e.length;i++){var s=e[i];if("string"==typeof s)o+=escapeString(s);else{var c=escapeString(s.prefix),u="(?:"+s.pattern+")";s.repeat&&(u+="(?:"+c+u+")*"),u=s.optional?s.partial?c+"("+u+")?":"(?:"+c+"("+u+"))?":c+"("+u+")",o+=u}}return r||(o=(p?o.slice(0,-2):o)+"(?:\\/(?=$))?"),o+=n?"$":r&&p?"":"(?=\\/|$)",new RegExp("^"+o,flags(t))}function pathToRegexp(e,t,r){return t=t||[],isarray(t)?r||(r={}):(r=t,t=[]),e instanceof RegExp?regexpToRegexp(e,t):isarray(e)?arrayToRegexp(e,t,r):stringToRegexp(e,t,r)}var isarray=require("isarray");module.exports=pathToRegexp,module.exports.parse=parse,module.exports.compile=compile,module.exports.tokensToFunction=tokensToFunction,module.exports.tokensToRegExp=tokensToRegExp;var PATH_REGEXP=new RegExp(["(\\\\.)","([\\/.])?(?:(?:\\:(\\w+)(?:\\(((?:\\\\.|[^()])+)\\))?|\\(((?:\\\\.|[^()])+)\\))([+*?])?|(\\*))"].join("|"),"g");
          Severity: Major
          Found in public/service-worker.js - About 45 mins to fix

            Function handleRegistration has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
            Open

                handleRegistration(registration) {
                    registration.onupdatefound = () => {
                        const installingWorker = registration.installing;
                        installingWorker.onstatechange = () => {
                            if (installingWorker.state === 'installed') {
            Severity: Minor
            Found in angular/app/components/app-root/app-root.component.js - About 35 mins to fix

            Cognitive Complexity

            Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

            A method's cognitive complexity is based on a few simple rules:

            • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
            • Code is considered more complex for each "break in the linear flow of the code"
            • Code is considered more complex when "flow breaking structures are nested"

            Further reading

            Similar blocks of code found in 2 locations. Consider refactoring.
            Open

                    let confirm = this.$mdDialog.confirm(params)
                        .title(title)
                        .content(content)
                        .ariaLabel(content)
                        .ok('Ok')
            Severity: Minor
            Found in angular/services/dialog.service.js and 1 other location - About 30 mins to fix
            angular/services/dialog.service.js on lines 31..35

            Duplicated Code

            Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

            Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

            When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

            Tuning

            This issue has a mass of 45.

            We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

            The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

            If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

            See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

            Refactorings

            Further Reading

            Similar blocks of code found in 2 locations. Consider refactoring.
            Open

                    let alert = this.$mdDialog.alert(params)
                        .title(title)
                        .content(content)
                        .ariaLabel(content)
                        .ok('Ok');
            Severity: Minor
            Found in angular/services/dialog.service.js and 1 other location - About 30 mins to fix
            angular/services/dialog.service.js on lines 41..45

            Duplicated Code

            Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

            Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

            When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

            Tuning

            This issue has a mass of 45.

            We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

            The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

            If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

            See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

            Refactorings

            Further Reading

            'require' is not defined.
            Open

            require('./tasks/bower.task.js');
            Severity: Minor
            Found in gulpfile.js by eslint

            Disallow Undeclared Variables (no-undef)

            This rule can help you locate potential ReferenceErrors resulting from misspellings of variable and parameter names, or accidental implicit globals (for example, from forgetting the var keyword in a for loop initializer).

            Rule Details

            Any reference to an undeclared variable causes a warning, unless the variable is explicitly mentioned in a /*global ...*/ comment.

            Examples of incorrect code for this rule:

            /*eslint no-undef: "error"*/
            
            var a = someFunction();
            b = 10;

            Examples of correct code for this rule with global declaration:

            /*global someFunction b:true*/
            /*eslint no-undef: "error"*/
            
            var a = someFunction();
            b = 10;

            The b:true syntax in /*global */ indicates that assignment to b is correct.

            Examples of incorrect code for this rule with global declaration:

            /*global b*/
            /*eslint no-undef: "error"*/
            
            b = 10;

            By default, variables declared in /*global */ are read-only, therefore assignment is incorrect.

            Options

            • typeof set to true will warn for variables used inside typeof check (Default false).

            typeof

            Examples of correct code for the default { "typeof": false } option:

            /*eslint no-undef: "error"*/
            
            if (typeof UndefinedIdentifier === "undefined") {
                // do something ...
            }

            You can use this option if you want to prevent typeof check on a variable which has not been declared.

            Examples of incorrect code for the { "typeof": true } option:

            /*eslint no-undef: ["error", { "typeof": true }] */
            
            if(typeof a === "string"){}

            Examples of correct code for the { "typeof": true } option with global declaration:

            /*global a*/
            /*eslint no-undef: ["error", { "typeof": true }] */
            
            if(typeof a === "string"){}

            Environments

            For convenience, ESLint provides shortcuts that pre-define global variables exposed by popular libraries and runtime environments. This rule supports these environments, as listed in Specifying Environments. A few examples are given below.

            browser

            Examples of correct code for this rule with browser environment:

            /*eslint no-undef: "error"*/
            /*eslint-env browser*/
            
            setTimeout(function() {
                alert("Hello");
            });

            node

            Examples of correct code for this rule with node environment:

            /*eslint no-undef: "error"*/
            /*eslint-env node*/
            
            var fs = require("fs");
            module.exports = function() {
                console.log(fs);
            };

            When Not To Use It

            If explicit declaration of global variables is not to your taste.

            Compatibility

            This rule provides compatibility with treatment of global variables in JSHint and JSLint. Source: http://eslint.org/docs/rules/

            'require' is not defined.
            Open

            var cssnano = require('gulp-cssnano');
            Severity: Minor
            Found in tasks/bower.task.js by eslint

            Disallow Undeclared Variables (no-undef)

            This rule can help you locate potential ReferenceErrors resulting from misspellings of variable and parameter names, or accidental implicit globals (for example, from forgetting the var keyword in a for loop initializer).

            Rule Details

            Any reference to an undeclared variable causes a warning, unless the variable is explicitly mentioned in a /*global ...*/ comment.

            Examples of incorrect code for this rule:

            /*eslint no-undef: "error"*/
            
            var a = someFunction();
            b = 10;

            Examples of correct code for this rule with global declaration:

            /*global someFunction b:true*/
            /*eslint no-undef: "error"*/
            
            var a = someFunction();
            b = 10;

            The b:true syntax in /*global */ indicates that assignment to b is correct.

            Examples of incorrect code for this rule with global declaration:

            /*global b*/
            /*eslint no-undef: "error"*/
            
            b = 10;

            By default, variables declared in /*global */ are read-only, therefore assignment is incorrect.

            Options

            • typeof set to true will warn for variables used inside typeof check (Default false).

            typeof

            Examples of correct code for the default { "typeof": false } option:

            /*eslint no-undef: "error"*/
            
            if (typeof UndefinedIdentifier === "undefined") {
                // do something ...
            }

            You can use this option if you want to prevent typeof check on a variable which has not been declared.

            Examples of incorrect code for the { "typeof": true } option:

            /*eslint no-undef: ["error", { "typeof": true }] */
            
            if(typeof a === "string"){}

            Examples of correct code for the { "typeof": true } option with global declaration:

            /*global a*/
            /*eslint no-undef: ["error", { "typeof": true }] */
            
            if(typeof a === "string"){}

            Environments

            For convenience, ESLint provides shortcuts that pre-define global variables exposed by popular libraries and runtime environments. This rule supports these environments, as listed in Specifying Environments. A few examples are given below.

            browser

            Examples of correct code for this rule with browser environment:

            /*eslint no-undef: "error"*/
            /*eslint-env browser*/
            
            setTimeout(function() {
                alert("Hello");
            });

            node

            Examples of correct code for this rule with node environment:

            /*eslint no-undef: "error"*/
            /*eslint-env node*/
            
            var fs = require("fs");
            module.exports = function() {
                console.log(fs);
            };

            When Not To Use It

            If explicit declaration of global variables is not to your taste.

            Compatibility

            This rule provides compatibility with treatment of global variables in JSHint and JSLint. Source: http://eslint.org/docs/rules/

            'require' is not defined.
            Open

            const elixir = require('laravel-elixir');
            Severity: Minor
            Found in gulpfile.js by eslint

            Disallow Undeclared Variables (no-undef)

            This rule can help you locate potential ReferenceErrors resulting from misspellings of variable and parameter names, or accidental implicit globals (for example, from forgetting the var keyword in a for loop initializer).

            Rule Details

            Any reference to an undeclared variable causes a warning, unless the variable is explicitly mentioned in a /*global ...*/ comment.

            Examples of incorrect code for this rule:

            /*eslint no-undef: "error"*/
            
            var a = someFunction();
            b = 10;

            Examples of correct code for this rule with global declaration:

            /*global someFunction b:true*/
            /*eslint no-undef: "error"*/
            
            var a = someFunction();
            b = 10;

            The b:true syntax in /*global */ indicates that assignment to b is correct.

            Examples of incorrect code for this rule with global declaration:

            /*global b*/
            /*eslint no-undef: "error"*/
            
            b = 10;

            By default, variables declared in /*global */ are read-only, therefore assignment is incorrect.

            Options

            • typeof set to true will warn for variables used inside typeof check (Default false).

            typeof

            Examples of correct code for the default { "typeof": false } option:

            /*eslint no-undef: "error"*/
            
            if (typeof UndefinedIdentifier === "undefined") {
                // do something ...
            }

            You can use this option if you want to prevent typeof check on a variable which has not been declared.

            Examples of incorrect code for the { "typeof": true } option:

            /*eslint no-undef: ["error", { "typeof": true }] */
            
            if(typeof a === "string"){}

            Examples of correct code for the { "typeof": true } option with global declaration:

            /*global a*/
            /*eslint no-undef: ["error", { "typeof": true }] */
            
            if(typeof a === "string"){}

            Environments

            For convenience, ESLint provides shortcuts that pre-define global variables exposed by popular libraries and runtime environments. This rule supports these environments, as listed in Specifying Environments. A few examples are given below.

            browser

            Examples of correct code for this rule with browser environment:

            /*eslint no-undef: "error"*/
            /*eslint-env browser*/
            
            setTimeout(function() {
                alert("Hello");
            });

            node

            Examples of correct code for this rule with node environment:

            /*eslint no-undef: "error"*/
            /*eslint-env node*/
            
            var fs = require("fs");
            module.exports = function() {
                console.log(fs);
            };

            When Not To Use It

            If explicit declaration of global variables is not to your taste.

            Compatibility

            This rule provides compatibility with treatment of global variables in JSHint and JSLint. Source: http://eslint.org/docs/rules/

            'require' is not defined.
            Open

            var Elixir = require('laravel-elixir');
            Severity: Minor
            Found in tasks/swPrecache.task.js by eslint

            Disallow Undeclared Variables (no-undef)

            This rule can help you locate potential ReferenceErrors resulting from misspellings of variable and parameter names, or accidental implicit globals (for example, from forgetting the var keyword in a for loop initializer).

            Rule Details

            Any reference to an undeclared variable causes a warning, unless the variable is explicitly mentioned in a /*global ...*/ comment.

            Examples of incorrect code for this rule:

            /*eslint no-undef: "error"*/
            
            var a = someFunction();
            b = 10;

            Examples of correct code for this rule with global declaration:

            /*global someFunction b:true*/
            /*eslint no-undef: "error"*/
            
            var a = someFunction();
            b = 10;

            The b:true syntax in /*global */ indicates that assignment to b is correct.

            Examples of incorrect code for this rule with global declaration:

            /*global b*/
            /*eslint no-undef: "error"*/
            
            b = 10;

            By default, variables declared in /*global */ are read-only, therefore assignment is incorrect.

            Options

            • typeof set to true will warn for variables used inside typeof check (Default false).

            typeof

            Examples of correct code for the default { "typeof": false } option:

            /*eslint no-undef: "error"*/
            
            if (typeof UndefinedIdentifier === "undefined") {
                // do something ...
            }

            You can use this option if you want to prevent typeof check on a variable which has not been declared.

            Examples of incorrect code for the { "typeof": true } option:

            /*eslint no-undef: ["error", { "typeof": true }] */
            
            if(typeof a === "string"){}

            Examples of correct code for the { "typeof": true } option with global declaration:

            /*global a*/
            /*eslint no-undef: ["error", { "typeof": true }] */
            
            if(typeof a === "string"){}

            Environments

            For convenience, ESLint provides shortcuts that pre-define global variables exposed by popular libraries and runtime environments. This rule supports these environments, as listed in Specifying Environments. A few examples are given below.

            browser

            Examples of correct code for this rule with browser environment:

            /*eslint no-undef: "error"*/
            /*eslint-env browser*/
            
            setTimeout(function() {
                alert("Hello");
            });

            node

            Examples of correct code for this rule with node environment:

            /*eslint no-undef: "error"*/
            /*eslint-env node*/
            
            var fs = require("fs");
            module.exports = function() {
                console.log(fs);
            };

            When Not To Use It

            If explicit declaration of global variables is not to your taste.

            Compatibility

            This rule provides compatibility with treatment of global variables in JSHint and JSLint. Source: http://eslint.org/docs/rules/

            'define' is not defined.
            Open

            (function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.toolbox = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
            Severity: Minor
            Found in public/service-worker.js by eslint

            Disallow Undeclared Variables (no-undef)

            This rule can help you locate potential ReferenceErrors resulting from misspellings of variable and parameter names, or accidental implicit globals (for example, from forgetting the var keyword in a for loop initializer).

            Rule Details

            Any reference to an undeclared variable causes a warning, unless the variable is explicitly mentioned in a /*global ...*/ comment.

            Examples of incorrect code for this rule:

            /*eslint no-undef: "error"*/
            
            var a = someFunction();
            b = 10;

            Examples of correct code for this rule with global declaration:

            /*global someFunction b:true*/
            /*eslint no-undef: "error"*/
            
            var a = someFunction();
            b = 10;

            The b:true syntax in /*global */ indicates that assignment to b is correct.

            Examples of incorrect code for this rule with global declaration:

            /*global b*/
            /*eslint no-undef: "error"*/
            
            b = 10;

            By default, variables declared in /*global */ are read-only, therefore assignment is incorrect.

            Options

            • typeof set to true will warn for variables used inside typeof check (Default false).

            typeof

            Examples of correct code for the default { "typeof": false } option:

            /*eslint no-undef: "error"*/
            
            if (typeof UndefinedIdentifier === "undefined") {
                // do something ...
            }

            You can use this option if you want to prevent typeof check on a variable which has not been declared.

            Examples of incorrect code for the { "typeof": true } option:

            /*eslint no-undef: ["error", { "typeof": true }] */
            
            if(typeof a === "string"){}

            Examples of correct code for the { "typeof": true } option with global declaration:

            /*global a*/
            /*eslint no-undef: ["error", { "typeof": true }] */
            
            if(typeof a === "string"){}

            Environments

            For convenience, ESLint provides shortcuts that pre-define global variables exposed by popular libraries and runtime environments. This rule supports these environments, as listed in Specifying Environments. A few examples are given below.

            browser

            Examples of correct code for this rule with browser environment:

            /*eslint no-undef: "error"*/
            /*eslint-env browser*/
            
            setTimeout(function() {
                alert("Hello");
            });

            node

            Examples of correct code for this rule with node environment:

            /*eslint no-undef: "error"*/
            /*eslint-env node*/
            
            var fs = require("fs");
            module.exports = function() {
                console.log(fs);
            };

            When Not To Use It

            If explicit declaration of global variables is not to your taste.

            Compatibility

            This rule provides compatibility with treatment of global variables in JSHint and JSLint. Source: http://eslint.org/docs/rules/

            'toolbox' is not defined.
            Open

            toolbox.router.get("'/'", toolbox.cacheFirst, {});
            Severity: Minor
            Found in public/service-worker.js by eslint

            Disallow Undeclared Variables (no-undef)

            This rule can help you locate potential ReferenceErrors resulting from misspellings of variable and parameter names, or accidental implicit globals (for example, from forgetting the var keyword in a for loop initializer).

            Rule Details

            Any reference to an undeclared variable causes a warning, unless the variable is explicitly mentioned in a /*global ...*/ comment.

            Examples of incorrect code for this rule:

            /*eslint no-undef: "error"*/
            
            var a = someFunction();
            b = 10;

            Examples of correct code for this rule with global declaration:

            /*global someFunction b:true*/
            /*eslint no-undef: "error"*/
            
            var a = someFunction();
            b = 10;

            The b:true syntax in /*global */ indicates that assignment to b is correct.

            Examples of incorrect code for this rule with global declaration:

            /*global b*/
            /*eslint no-undef: "error"*/
            
            b = 10;

            By default, variables declared in /*global */ are read-only, therefore assignment is incorrect.

            Options

            • typeof set to true will warn for variables used inside typeof check (Default false).

            typeof

            Examples of correct code for the default { "typeof": false } option:

            /*eslint no-undef: "error"*/
            
            if (typeof UndefinedIdentifier === "undefined") {
                // do something ...
            }

            You can use this option if you want to prevent typeof check on a variable which has not been declared.

            Examples of incorrect code for the { "typeof": true } option:

            /*eslint no-undef: ["error", { "typeof": true }] */
            
            if(typeof a === "string"){}

            Examples of correct code for the { "typeof": true } option with global declaration:

            /*global a*/
            /*eslint no-undef: ["error", { "typeof": true }] */
            
            if(typeof a === "string"){}

            Environments

            For convenience, ESLint provides shortcuts that pre-define global variables exposed by popular libraries and runtime environments. This rule supports these environments, as listed in Specifying Environments. A few examples are given below.

            browser

            Examples of correct code for this rule with browser environment:

            /*eslint no-undef: "error"*/
            /*eslint-env browser*/
            
            setTimeout(function() {
                alert("Hello");
            });

            node

            Examples of correct code for this rule with node environment:

            /*eslint no-undef: "error"*/
            /*eslint-env node*/
            
            var fs = require("fs");
            module.exports = function() {
                console.log(fs);
            };

            When Not To Use It

            If explicit declaration of global variables is not to your taste.

            Compatibility

            This rule provides compatibility with treatment of global variables in JSHint and JSLint. Source: http://eslint.org/docs/rules/

            '$auth' is defined but never used.
            Open

            export function RoutesRun($state, $transitions, $auth) {
            Severity: Minor
            Found in angular/run/routes.run.js by eslint

            Disallow Unused Variables (no-unused-vars)

            Variables that are declared and not used anywhere in the code are most likely an error due to incomplete refactoring. Such variables take up space in the code and can lead to confusion by readers.

            Rule Details

            This rule is aimed at eliminating unused variables, functions, and parameters of functions.

            A variable is considered to be used if any of the following are true:

            • It represents a function that is called (doSomething())
            • It is read (var y = x)
            • It is passed into a function as an argument (doSomething(x))
            • It is read inside of a function that is passed to another function (doSomething(function() { foo(); }))

            A variable is not considered to be used if it is only ever assigned to (var x = 5) or declared.

            Examples of incorrect code for this rule:

            /*eslint no-unused-vars: "error"*/
            /*global some_unused_var*/
            
            // It checks variables you have defined as global
            some_unused_var = 42;
            
            var x;
            
            // Write-only variables are not considered as used.
            var y = 10;
            y = 5;
            
            // A read for a modification of itself is not considered as used.
            var z = 0;
            z = z + 1;
            
            // By default, unused arguments cause warnings.
            (function(foo) {
                return 5;
            })();
            
            // Unused recursive functions also cause warnings.
            function fact(n) {
                if (n < 2) return 1;
                return n * fact(n - 1);
            }
            
            // When a function definition destructures an array, unused entries from the array also cause warnings.
            function getY([x, y]) {
                return y;
            }

            Examples of correct code for this rule:

            /*eslint no-unused-vars: "error"*/
            
            var x = 10;
            alert(x);
            
            // foo is considered used here
            myFunc(function foo() {
                // ...
            }.bind(this));
            
            (function(foo) {
                return foo;
            })();
            
            var myFunc;
            myFunc = setTimeout(function() {
                // myFunc is considered used
                myFunc();
            }, 50);
            
            // Only the second argument from the descructured array is used.
            function getY([, y]) {
                return y;
            }

            exported

            In environments outside of CommonJS or ECMAScript modules, you may use var to create a global variable that may be used by other scripts. You can use the /* exported variableName */ comment block to indicate that this variable is being exported and therefore should not be considered unused.

            Note that /* exported */ has no effect for any of the following:

            • when the environment is node or commonjs
            • when parserOptions.sourceType is module
            • when ecmaFeatures.globalReturn is true

            The line comment // exported variableName will not work as exported is not line-specific.

            Examples of correct code for /* exported variableName */ operation:

            /* exported global_var */
            
            var global_var = 42;

            Options

            This rule takes one argument which can be a string or an object. The string settings are the same as those of the vars property (explained below).

            By default this rule is enabled with all option for variables and after-used for arguments.

            {
                "rules": {
                    "no-unused-vars": ["error", { "vars": "all", "args": "after-used", "ignoreRestSiblings": false }]
                }
            }

            vars

            The vars option has two settings:

            • all checks all variables for usage, including those in the global scope. This is the default setting.
            • local checks only that locally-declared variables are used but will allow global variables to be unused.

            vars: local

            Examples of correct code for the { "vars": "local" } option:

            /*eslint no-unused-vars: ["error", { "vars": "local" }]*/
            /*global some_unused_var */
            
            some_unused_var = 42;

            varsIgnorePattern

            The varsIgnorePattern option specifies exceptions not to check for usage: variables whose names match a regexp pattern. For example, variables whose names contain ignored or Ignored.

            Examples of correct code for the { "varsIgnorePattern": "[iI]gnored" } option:

            /*eslint no-unused-vars: ["error", { "varsIgnorePattern": "[iI]gnored" }]*/
            
            var firstVarIgnored = 1;
            var secondVar = 2;
            console.log(secondVar);

            args

            The args option has three settings:

            • after-used - only the last argument must be used. This allows you, for instance, to have two named parameters to a function and as long as you use the second argument, ESLint will not warn you about the first. This is the default setting.
            • all - all named arguments must be used.
            • none - do not check arguments.

            args: after-used

            Examples of incorrect code for the default { "args": "after-used" } option:

            /*eslint no-unused-vars: ["error", { "args": "after-used" }]*/
            
            // 1 error
            // "baz" is defined but never used
            (function(foo, bar, baz) {
                return bar;
            })();

            Examples of correct code for the default { "args": "after-used" } option:

            /*eslint no-unused-vars: ["error", {"args": "after-used"}]*/
            
            (function(foo, bar, baz) {
                return baz;
            })();

            args: all

            Examples of incorrect code for the { "args": "all" } option:

            /*eslint no-unused-vars: ["error", { "args": "all" }]*/
            
            // 2 errors
            // "foo" is defined but never used
            // "baz" is defined but never used
            (function(foo, bar, baz) {
                return bar;
            })();

            args: none

            Examples of correct code for the { "args": "none" } option:

            /*eslint no-unused-vars: ["error", { "args": "none" }]*/
            
            (function(foo, bar, baz) {
                return bar;
            })();

            ignoreRestSiblings

            The ignoreRestSiblings option is a boolean (default: false). Using a Rest Property it is possible to "omit" properties from an object, but by default the sibling properties are marked as "unused". With this option enabled the rest property's siblings are ignored.

            Examples of correct code for the { "ignoreRestSiblings": true } option:

            /*eslint no-unused-vars: ["error", { "ignoreRestSiblings": true }]*/
            // 'type' is ignored because it has a rest property sibling.
            var { type, ...coords } = data;

            argsIgnorePattern

            The argsIgnorePattern option specifies exceptions not to check for usage: arguments whose names match a regexp pattern. For example, variables whose names begin with an underscore.

            Examples of correct code for the { "argsIgnorePattern": "^_" } option:

            /*eslint no-unused-vars: ["error", { "argsIgnorePattern": "^_" }]*/
            
            function foo(x, _y) {
                return x + 1;
            }
            foo();

            caughtErrors

            The caughtErrors option is used for catch block arguments validation.

            It has two settings:

            • none - do not check error objects. This is the default setting.
            • all - all named arguments must be used.

            caughtErrors: none

            Not specifying this rule is equivalent of assigning it to none.

            Examples of correct code for the { "caughtErrors": "none" } option:

            /*eslint no-unused-vars: ["error", { "caughtErrors": "none" }]*/
            
            try {
                //...
            } catch (err) {
                console.error("errors");
            }

            caughtErrors: all

            Examples of incorrect code for the { "caughtErrors": "all" } option:

            /*eslint no-unused-vars: ["error", { "caughtErrors": "all" }]*/
            
            // 1 error
            // "err" is defined but never used
            try {
                //...
            } catch (err) {
                console.error("errors");
            }

            caughtErrorsIgnorePattern

            The caughtErrorsIgnorePattern option specifies exceptions not to check for usage: catch arguments whose names match a regexp pattern. For example, variables whose names begin with a string 'ignore'.

            Examples of correct code for the { "caughtErrorsIgnorePattern": "^ignore" } option:

            /*eslint no-unused-vars: ["error", { "caughtErrorsIgnorePattern": "^ignore" }]*/
            
            try {
                //...
            } catch (ignoreErr) {
                console.error("errors");
            }

            When Not To Use It

            If you don't want to be notified about unused variables or function arguments, you can safely turn this rule off. Source: http://eslint.org/docs/rules/

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