Set up A11y linter

.eslintrc.js

@@ -26,6 +26,7 @@ module.exports = {
   extends: [
     'eslint:recommended',
     'plugin:jest/recommended',
+    'plugin:vue-a11y/recommended',
     'tjw-base',
     'tjw-vue'
   ],
@@ -33,6 +34,8 @@ module.exports = {
     'no-restricted-syntax': [
       'error',
       'Property[method="true"]'
-    ]
+    ],
+    // https://github.com/maranran/eslint-plugin-vue-a11y/issues/10
+    'vue-a11y/click-events-have-key-events': 'off'
   }
 };

package-lock.json

@@ -4961,6 +4961,16 @@
         "sprintf-js": "~1.0.2"
       }
     },
+    "aria-query": {
+      "version": "0.7.1",
+      "resolved": "https://registry.npmjs.org/aria-query/-/aria-query-0.7.1.tgz",
+      "integrity": "sha1-Jsu1r/ZBRLCoJb4YRuCxbPoAsR4=",
+      "dev": true,
+      "requires": {
+        "ast-types-flow": "0.0.7",
+        "commander": "^2.11.0"
+      }
+    },
     "arr-diff": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/arr-diff/-/arr-diff-4.0.0.tgz",
@@ -4990,6 +5000,96 @@
       "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
       "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
     },
+    "array-includes": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/array-includes/-/array-includes-3.1.1.tgz",
+      "integrity": "sha512-c2VXaCHl7zPsvpkFsw4nxvFie4fh1ur9bpcgsVkIjqn0H/Xwdg+7fv3n2r/isyS8EBj5b06M9kHyZuIr4El6WQ==",
+      "dev": true,
+      "requires": {
+        "define-properties": "^1.1.3",
+        "es-abstract": "^1.17.0",
+        "is-string": "^1.0.5"
+      },
+      "dependencies": {
+        "es-abstract": {
+          "version": "1.17.0",
+          "resolved": "https://registry.npmjs.org/es-abstract/-/es-abstract-1.17.0.tgz",
+          "integrity": "sha512-yYkE07YF+6SIBmg1MsJ9dlub5L48Ek7X0qz+c/CPCHS9EBXfESorzng4cJQjJW5/pB6vDF41u7F8vUhLVDqIug==",
+          "dev": true,
+          "requires": {
+            "es-to-primitive": "^1.2.1",
+            "function-bind": "^1.1.1",
+            "has": "^1.0.3",
+            "has-symbols": "^1.0.1",
+            "is-callable": "^1.1.5",
+            "is-regex": "^1.0.5",
+            "object-inspect": "^1.7.0",
+            "object-keys": "^1.1.1",
+            "object.assign": "^4.1.0",
+            "string.prototype.trimleft": "^2.1.1",
+            "string.prototype.trimright": "^2.1.1"
+          }
+        },
+        "es-to-primitive": {
+          "version": "1.2.1",
+          "resolved": "https://registry.npmjs.org/es-to-primitive/-/es-to-primitive-1.2.1.tgz",
+          "integrity": "sha512-QCOllgZJtaUo9miYBcLChTUaHNjJF3PYs1VidD7AwiEj1kYxKeQTctLAezAOH5ZKRH0g2IgPn6KwB4IT8iRpvA==",
+          "dev": true,
+          "requires": {
+            "is-callable": "^1.1.4",
+            "is-date-object": "^1.0.1",
+            "is-symbol": "^1.0.2"
+          }
+        },
+        "has-symbols": {
+          "version": "1.0.1",
+          "resolved": "https://registry.npmjs.org/has-symbols/-/has-symbols-1.0.1.tgz",
+          "integrity": "sha512-PLcsoqu++dmEIZB+6totNFKq/7Do+Z0u4oT0zKOJNl3lYK6vGwwu2hjHs+68OEZbTjiUE9bgOABXbP/GvrS0Kg==",
+          "dev": true
+        },
+        "is-callable": {
+          "version": "1.1.5",
+          "resolved": "https://registry.npmjs.org/is-callable/-/is-callable-1.1.5.tgz",
+          "integrity": "sha512-ESKv5sMCJB2jnHTWZ3O5itG+O128Hsus4K4Qh1h2/cgn2vbgnLSVqfV46AeJA9D5EeeLa9w81KUXMtn34zhX+Q==",
+          "dev": true
+        },
+        "is-regex": {
+          "version": "1.0.5",
+          "resolved": "https://registry.npmjs.org/is-regex/-/is-regex-1.0.5.tgz",
+          "integrity": "sha512-vlKW17SNq44owv5AQR3Cq0bQPEb8+kF3UKZ2fiZNOWtztYE5i0CzCZxFDwO58qAOWtxdBRVO/V5Qin1wjCqFYQ==",
+          "dev": true,
+          "requires": {
+            "has": "^1.0.3"
+          }
+        },
+        "object-inspect": {
+          "version": "1.7.0",
+          "resolved": "https://registry.npmjs.org/object-inspect/-/object-inspect-1.7.0.tgz",
+          "integrity": "sha512-a7pEHdh1xKIAgTySUGgLMx/xwDZskN1Ud6egYYN3EdRW4ZMPNEDUTF+hwy2LUC+Bl+SyLXANnwz/jyh/qutKUw==",
+          "dev": true
+        },
+        "string.prototype.trimleft": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/string.prototype.trimleft/-/string.prototype.trimleft-2.1.1.tgz",
+          "integrity": "sha512-iu2AGd3PuP5Rp7x2kEZCrB2Nf41ehzh+goo8TV7z8/XDBbsvc6HQIlUl9RjkZ4oyrW1XM5UwlGl1oVEaDjg6Ag==",
+          "dev": true,
+          "requires": {
+            "define-properties": "^1.1.3",
+            "function-bind": "^1.1.1"
+          }
+        },
+        "string.prototype.trimright": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/string.prototype.trimright/-/string.prototype.trimright-2.1.1.tgz",
+          "integrity": "sha512-qFvWL3/+QIgZXVmJBfpHmxLB7xsUXz6HsUmP8+5dRaC3Q7oKUv9Vo6aMCRZC1smrtyECFsIT30PqBJ1gTjAs+g==",
+          "dev": true,
+          "requires": {
+            "define-properties": "^1.1.3",
+            "function-bind": "^1.1.1"
+          }
+        }
+      }
+    },
     "array-union": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/array-union/-/array-union-1.0.2.tgz",
@@ -5082,6 +5182,12 @@
       "integrity": "sha512-uWMHxJxtfj/1oZClOxDEV1sQ1HCDkA4MG8Gr69KKeBjEVH0R84WlejZ0y2DcwyBlpAEMltmVYkVgqfLFb2oyiA==",
       "dev": true
     },
+    "ast-types-flow": {
+      "version": "0.0.7",
+      "resolved": "https://registry.npmjs.org/ast-types-flow/-/ast-types-flow-0.0.7.tgz",
+      "integrity": "sha1-9wtzXGvKGlycItmCw+Oef+ujva0=",
+      "dev": true
+    },
     "astral-regex": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/astral-regex/-/astral-regex-1.0.0.tgz",
@@ -5162,6 +5268,37 @@
       "integrity": "sha512-ReZxvNHIOv88FlT7rxcXIIC0fPt4KZqZbOlivyWtXLt8ESx84zd3kMC6iK5jVeS2qt+g7ftS7ye4fi06X5rtRQ==",
       "dev": true
     },
+    "axobject-query": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/axobject-query/-/axobject-query-2.1.1.tgz",
+      "integrity": "sha512-lF98xa/yvy6j3fBHAgQXIYl+J4eZadOSqsPojemUqClzNbBV38wWGpUbQbVEyf4eUF5yF7eHmGgGA2JiHyjeqw==",
+      "dev": true,
+      "requires": {
+        "@babel/runtime": "^7.7.4",
+        "@babel/runtime-corejs3": "^7.7.4"
+      },
+      "dependencies": {
+        "@babel/runtime": {
+          "version": "7.7.7",
+          "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.7.7.tgz",
+          "integrity": "sha512-uCnC2JEVAu8AKB5do1WRIsvrdJ0flYx/A/9f/6chdacnEZ7LmavjdsDXr5ksYBegxtuTPR5Va9/+13QF/kFkCA==",
+          "dev": true,
+          "requires": {
+            "regenerator-runtime": "^0.13.2"
+          }
+        },
+        "@babel/runtime-corejs3": {
+          "version": "7.7.7",
+          "resolved": "https://registry.npmjs.org/@babel/runtime-corejs3/-/runtime-corejs3-7.7.7.tgz",
+          "integrity": "sha512-kr3W3Fw8mB/CTru2M5zIRQZZgC/9zOxNSoJ/tVCzjPt3H1/p5uuGbz6WwmaQy/TLQcW31rUhUUWKY28sXFRelA==",
+          "dev": true,
+          "requires": {
+            "core-js-pure": "^3.0.0",
+            "regenerator-runtime": "^0.13.2"
+          }
+        }
+      }
+    },
     "babel-code-frame": {
       "version": "6.26.0",
       "resolved": "https://registry.npmjs.org/babel-code-frame/-/babel-code-frame-6.26.0.tgz",
@@ -6992,6 +7129,37 @@
         "url-to-options": "^1.0.1"
       }
     },
+    "chai": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/chai/-/chai-4.2.0.tgz",
+      "integrity": "sha512-XQU3bhBukrOsQCuwZndwGcCVQHyZi53fQ6Ys1Fym7E4olpIqqZZhhoFJoaKVvV17lWQoXYwgWN2nF5crA8J2jw==",
+      "dev": true,
+      "requires": {
+        "assertion-error": "^1.1.0",
+        "check-error": "^1.0.2",
+        "deep-eql": "^3.0.1",
+        "get-func-name": "^2.0.0",
+        "pathval": "^1.1.0",
+        "type-detect": "^4.0.5"
+      },
+      "dependencies": {
+        "deep-eql": {
+          "version": "3.0.1",
+          "resolved": "https://registry.npmjs.org/deep-eql/-/deep-eql-3.0.1.tgz",
+          "integrity": "sha512-+QeIQyN5ZuO+3Uk5DYh6/1eKO0m0YmJFGNmFHGACpf1ClL1nmlV/p4gNgbl2pJGxgXb4faqo6UE+M5ACEMyVcw==",
+          "dev": true,
+          "requires": {
+            "type-detect": "^4.0.0"
+          }
+        },
+        "type-detect": {
+          "version": "4.0.8",
+          "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.0.8.tgz",
+          "integrity": "sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==",
+          "dev": true
+        }
+      }
+    },
     "chai-nightwatch": {
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/chai-nightwatch/-/chai-nightwatch-0.3.0.tgz",
@@ -7033,6 +7201,12 @@
       "integrity": "sha1-BsIe7RobBq62dVPNxT4jJ0usIpY=",
       "dev": true
     },
+    "check-error": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/check-error/-/check-error-1.0.2.tgz",
+      "integrity": "sha1-V00xLt2Iu13YkS6Sht1sCu1KrII=",
+      "dev": true
+    },
     "check-types": {
       "version": "8.0.3",
       "resolved": "https://registry.npmjs.org/check-types/-/check-types-8.0.3.tgz",
@@ -8165,6 +8339,12 @@
       "integrity": "sha1-WW6WmP0MgOEgOMK4LW6xs1tiJNk=",
       "dev": true
     },
+    "damerau-levenshtein": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/damerau-levenshtein/-/damerau-levenshtein-1.0.5.tgz",
+      "integrity": "sha512-CBCRqFnpu715iPmw1KrdOrzRqbdFwQTwAWyyyYS42+iAgHCuXZ+/TdMgQkUENPomxEz9z1BEzuQU2Xw0kUuAgA==",
+      "dev": true
+    },
     "dashdash": {
       "version": "1.14.1",
       "resolved": "https://registry.npmjs.org/dashdash/-/dashdash-1.14.1.tgz",
@@ -9347,6 +9527,7 @@
           "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.5.2.tgz",
           "integrity": "sha1-c7Xuyj+rZT49P5Qis0GtQiBdyWU=",
           "dev": true,
+          "optional": true,
           "requires": {
             "co": "^4.6.0",
             "fast-deep-equal": "^1.0.0",
@@ -9365,7 +9546,8 @@
           "version": "3.0.0",
           "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
           "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "chardet": {
           "version": "0.4.2",
@@ -9523,7 +9705,8 @@
           "version": "1.1.0",
           "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-1.1.0.tgz",
           "integrity": "sha1-wFNHeBfIa1HaqFPIHgWbcz0CNhQ=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "figures": {
           "version": "2.0.0",
@@ -9629,7 +9812,8 @@
           "version": "0.3.1",
           "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-0.3.1.tgz",
           "integrity": "sha1-NJptRMU6Ud6JtAgFxdXlm0F9M0A=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "ms": {
           "version": "2.1.2",
@@ -9673,6 +9857,7 @@
           "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
           "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^3.0.0"
           }
@@ -9744,6 +9929,35 @@
         "@typescript-eslint/experimental-utils": "^2.5.0"
       }
     },
+    "eslint-plugin-jsx-a11y": {
+      "version": "6.2.3",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-jsx-a11y/-/eslint-plugin-jsx-a11y-6.2.3.tgz",
+      "integrity": "sha512-CawzfGt9w83tyuVekn0GDPU9ytYtxyxyFZ3aSWROmnRRFQFT2BiPJd7jvRdzNDi6oLWaS2asMeYSNMjWTV4eNg==",
+      "dev": true,
+      "requires": {
+        "@babel/runtime": "^7.4.5",
+        "aria-query": "^3.0.0",
+        "array-includes": "^3.0.3",
+        "ast-types-flow": "^0.0.7",
+        "axobject-query": "^2.0.2",
+        "damerau-levenshtein": "^1.0.4",
+        "emoji-regex": "^7.0.2",
+        "has": "^1.0.3",
+        "jsx-ast-utils": "^2.2.1"
+      },
+      "dependencies": {
+        "aria-query": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/aria-query/-/aria-query-3.0.0.tgz",
+          "integrity": "sha1-ZbP8wcoRVajJrmTW7uKX8V1RM8w=",
+          "dev": true,
+          "requires": {
+            "ast-types-flow": "0.0.7",
+            "commander": "^2.11.0"
+          }
+        }
+      }
+    },
     "eslint-plugin-vue": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/eslint-plugin-vue/-/eslint-plugin-vue-6.0.0.tgz",
@@ -9795,6 +10009,101 @@
         }
       }
     },
+    "eslint-plugin-vue-a11y": {
+      "version": "0.0.31",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-vue-a11y/-/eslint-plugin-vue-a11y-0.0.31.tgz",
+      "integrity": "sha512-8dqLdIhVtEw7Ux4E3MK0H2LSIgGJ5/eLs3B+0L16ahawo+i66hqviHMF1Uvcc60bkTbuniMtaMWKaBAh62V/nw==",
+      "dev": true,
+      "requires": {
+        "aria-query": "^0.7.1",
+        "chai": "^4.1.0",
+        "emoji-regex": "^7.0.0",
+        "eslint-plugin-jsx-a11y": "^6.2.1",
+        "eslint-plugin-vue": "^5.2.2",
+        "jsx-ast-utils": "^2.0.1",
+        "vue-eslint-parser": "^6.0.4"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "4.1.1",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
+          "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
+          "dev": true,
+          "requires": {
+            "ms": "^2.1.1"
+          }
+        },
+        "eslint-plugin-vue": {
+          "version": "5.2.3",
+          "resolved": "https://registry.npmjs.org/eslint-plugin-vue/-/eslint-plugin-vue-5.2.3.tgz",
+          "integrity": "sha512-mGwMqbbJf0+VvpGR5Lllq0PMxvTdrZ/ZPjmhkacrCHbubJeJOt+T6E3HUzAifa2Mxi7RSdJfC9HFpOeSYVMMIw==",
+          "dev": true,
+          "requires": {
+            "vue-eslint-parser": "^5.0.0"
+          },
+          "dependencies": {
+            "vue-eslint-parser": {
+              "version": "5.0.0",
+              "resolved": "https://registry.npmjs.org/vue-eslint-parser/-/vue-eslint-parser-5.0.0.tgz",
+              "integrity": "sha512-JlHVZwBBTNVvzmifwjpZYn0oPWH2SgWv5dojlZBsrhablDu95VFD+hriB1rQGwbD+bms6g+rAFhQHk6+NyiS6g==",
+              "dev": true,
+              "requires": {
+                "debug": "^4.1.0",
+                "eslint-scope": "^4.0.0",
+                "eslint-visitor-keys": "^1.0.0",
+                "espree": "^4.1.0",
+                "esquery": "^1.0.1",
+                "lodash": "^4.17.11"
+              }
+            }
+          }
+        },
+        "espree": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/espree/-/espree-4.1.0.tgz",
+          "integrity": "sha512-I5BycZW6FCVIub93TeVY1s7vjhP9CY6cXCznIRfiig7nRviKZYdRnj/sHEWC6A7WE9RDWOFq9+7OsWSYz8qv2w==",
+          "dev": true,
+          "requires": {
+            "acorn": "^6.0.2",
+            "acorn-jsx": "^5.0.0",
+            "eslint-visitor-keys": "^1.0.0"
+          }
+        },
+        "ms": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==",
+          "dev": true
+        },
+        "vue-eslint-parser": {
+          "version": "6.0.5",
+          "resolved": "https://registry.npmjs.org/vue-eslint-parser/-/vue-eslint-parser-6.0.5.tgz",
+          "integrity": "sha512-Bvjlx7rH1Ulvus56KHeLXOjEi3JMOYTa1GAqZr9lBQhd8weK8mV7U7V2l85yokBZEWHJQjLn6X3nosY8TzkOKg==",
+          "dev": true,
+          "requires": {
+            "debug": "^4.1.1",
+            "eslint-scope": "^4.0.0",
+            "eslint-visitor-keys": "^1.0.0",
+            "espree": "^5.0.0",
+            "esquery": "^1.0.1",
+            "lodash": "^4.17.11"
+          },
+          "dependencies": {
+            "espree": {
+              "version": "5.0.1",
+              "resolved": "https://registry.npmjs.org/espree/-/espree-5.0.1.tgz",
+              "integrity": "sha512-qWAZcWh4XE/RwzLJejfcofscgMc9CamR6Tn1+XRXNzrvUSSbiAjGOI/fggztjIi7y9VLPqnICMIPiGyr8JaZ0A==",
+              "dev": true,
+              "requires": {
+                "acorn": "^6.0.7",
+                "acorn-jsx": "^5.0.0",
+                "eslint-visitor-keys": "^1.0.0"
+              }
+            }
+          }
+        }
+      }
+    },
     "eslint-scope": {
       "version": "4.0.3",
       "resolved": "https://registry.npmjs.org/eslint-scope/-/eslint-scope-4.0.3.tgz",
@@ -10529,7 +10838,8 @@
         "ansi-regex": {
           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -10944,7 +11254,8 @@
         "safe-buffer": {
           "version": "5.1.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -11000,6 +11311,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -11043,12 +11355,14 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -11106,6 +11420,12 @@
       "integrity": "sha512-3t6rVToeoZfYSGd8YoLFR2DJkiQrIiUrGcjvFX2mDw3bn6k2OtwHN0TNCLbBO+w8qTvimhDkv+LSscbJY1vE6w==",
       "dev": true
     },
+    "get-func-name": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/get-func-name/-/get-func-name-2.0.0.tgz",
+      "integrity": "sha1-6td0q+5y4gQJQzoGY2YCPdaIekE=",
+      "dev": true
+    },
     "get-proxy": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/get-proxy/-/get-proxy-2.1.0.tgz",
@@ -12310,6 +12630,12 @@
       "integrity": "sha1-EtSj3U5o4Lec6428hBc66A2RykQ=",
       "dev": true
     },
+    "is-string": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/is-string/-/is-string-1.0.5.tgz",
+      "integrity": "sha512-buY6VNRjhQMiF1qWDouloZlQbRhDPCebwxSjxMjxgemYT46YMd2NR0/H+fBhEfWX4A/w9TBJ+ol+okqJKFE6vQ==",
+      "dev": true
+    },
     "is-svg": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/is-svg/-/is-svg-3.0.0.tgz",
@@ -13474,6 +13800,16 @@
         "verror": "1.10.0"
       }
     },
+    "jsx-ast-utils": {
+      "version": "2.2.3",
+      "resolved": "https://registry.npmjs.org/jsx-ast-utils/-/jsx-ast-utils-2.2.3.tgz",
+      "integrity": "sha512-EdIHFMm+1BPynpKOpdPqiOsvnIrInRGJD7bzPZdPkjitQEqpdpUuFpq4T0npZFKTiB3RhWFdGN+oqOJIdhDhQA==",
+      "dev": true,
+      "requires": {
+        "array-includes": "^3.0.3",
+        "object.assign": "^4.1.0"
+      }
+    },
     "jszip": {
       "version": "3.2.2",
       "resolved": "https://registry.npmjs.org/jszip/-/jszip-3.2.2.tgz",
@@ -15568,6 +15904,12 @@
         }
       }
     },
+    "pathval": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/pathval/-/pathval-1.1.0.tgz",
+      "integrity": "sha1-uULm1L3mUwBe9rcTYd74cn0GReA=",
+      "dev": true
+    },
     "pbkdf2": {
       "version": "3.0.17",
       "resolved": "https://registry.npmjs.org/pbkdf2/-/pbkdf2-3.0.17.tgz",
@@ -17032,7 +17374,8 @@
       "version": "4.0.8",
       "resolved": "https://registry.npmjs.org/rx-lite/-/rx-lite-4.0.8.tgz",
       "integrity": "sha1-Cx4Rr4vESDbwSmQH6S2kJGe3lEQ=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "rx-lite-aggregates": {
       "version": "4.0.8",

package.json

@@ -65,6 +65,7 @@
     "eslint-config-tjw-vue": "^1.0.0",
     "eslint-plugin-jest": "^23.0.3",
     "eslint-plugin-vue": "^6.0.0",
+    "eslint-plugin-vue-a11y": "^0.0.31",
     "jest": "^24.9.0",
     "jest-environment-jsdom": "^24.9.0",
     "jest-environment-jsdom-global": "^1.2.0",