GoogleChrome · brendankenny · Oct 18, 2017 · Oct 13, 2017 · Oct 18, 2017
diff --git a/docs/recipes/custom-audit/searchable-audit.js b/docs/recipes/custom-audit/searchable-audit.js
@@ -17,7 +17,6 @@ const MAX_SEARCHABLE_TIME = 4000;
 class LoadAudit extends Audit {
   static get meta() {
     return {
-      category: 'MyCustomCategory',
       name: 'searchable-audit',
       description: 'Search box initialized and ready',
       failureDescription: 'Search box slow to initialize',

diff --git a/lighthouse-cli/types/types.ts b/lighthouse-cli/types/types.ts
@@ -20,7 +20,6 @@ interface AuditFullResult {
   error?: boolean;
   description: string;
   name: string;
-  category: string;
   helpText?: string;
   extendedInfo?: {value: string};
 }

diff --git a/lighthouse-core/audits/accessibility/accesskeys.js b/lighthouse-core/audits/accessibility/accesskeys.js
@@ -18,7 +18,6 @@ class Accesskeys extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'accesskeys',
       description: '`[accesskey]` values are unique.',
       failureDescription: '`[accesskey]` values are not unique.',

diff --git a/lighthouse-core/audits/accessibility/aria-allowed-attr.js b/lighthouse-core/audits/accessibility/aria-allowed-attr.js
@@ -18,7 +18,6 @@ class ARIAAllowedAttr extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'aria-allowed-attr',
       description: '`[aria-*]` attributes match their roles.',
       failureDescription: '`[aria-*]` attributes do not match their roles.',

diff --git a/lighthouse-core/audits/accessibility/aria-required-attr.js b/lighthouse-core/audits/accessibility/aria-required-attr.js
@@ -18,7 +18,6 @@ class ARIARequiredAttr extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'aria-required-attr',
       description: '`[role]`s have all required `[aria-*]` attributes.',
       failureDescription: '`[role]`s do not have all required `[aria-*]` attributes.',

diff --git a/lighthouse-core/audits/accessibility/aria-required-children.js b/lighthouse-core/audits/accessibility/aria-required-children.js
@@ -19,7 +19,6 @@ class AriaRequiredChildren extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'aria-required-children',
       description: 'Elements with `[role]` that require specific children `[role]`s, are present.',
       failureDescription: 'Elements with `[role]` that require specific children `[role]`s, ' +

diff --git a/lighthouse-core/audits/accessibility/aria-required-parent.js b/lighthouse-core/audits/accessibility/aria-required-parent.js
@@ -19,7 +19,6 @@ class AriaRequiredParent extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'aria-required-parent',
       description: '`[role]`s are contained by their required parent element.',
       failureDescription: '`[role]`s are not contained by their required parent element.',

diff --git a/lighthouse-core/audits/accessibility/aria-roles.js b/lighthouse-core/audits/accessibility/aria-roles.js
@@ -18,7 +18,6 @@ class AriaRoles extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'aria-roles',
       description: '`[role]` values are valid.',
       failureDescription: '`[role]` values are not valid.',

diff --git a/lighthouse-core/audits/accessibility/aria-valid-attr-value.js b/lighthouse-core/audits/accessibility/aria-valid-attr-value.js
@@ -18,7 +18,6 @@ class ARIAValidAttr extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'aria-valid-attr-value',
       description: '`[aria-*]` attributes have valid values.',
       failureDescription: '`[aria-*]` attributes do not have valid values.',

diff --git a/lighthouse-core/audits/accessibility/aria-valid-attr.js b/lighthouse-core/audits/accessibility/aria-valid-attr.js
@@ -18,7 +18,6 @@ class ARIAValidAttr extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'aria-valid-attr',
       description: '`[aria-*]` attributes are valid and not misspelled.',
       failureDescription: '`[aria-*]` attributes are not valid or misspelled.',

diff --git a/lighthouse-core/audits/accessibility/audio-caption.js b/lighthouse-core/audits/accessibility/audio-caption.js
@@ -18,7 +18,6 @@ class AudioCaption extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'audio-caption',
       description: '`<audio>` elements contain a `<track>` element with `[kind="captions"]`.',
       failureDescription: '`<audio>` elements are missing a `<track>` element with ' +

diff --git a/lighthouse-core/audits/accessibility/button-name.js b/lighthouse-core/audits/accessibility/button-name.js
@@ -18,7 +18,6 @@ class ButtonName extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'button-name',
       description: 'Buttons have an accessible name.',
       failureDescription: 'Buttons do not have an accessible name.',

diff --git a/lighthouse-core/audits/accessibility/bypass.js b/lighthouse-core/audits/accessibility/bypass.js
@@ -19,7 +19,6 @@ class Bypass extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'bypass',
       description: 'The page contains a heading, skip link, or landmark region.',
       failureDescription: 'The page does not contain a heading, skip link, or landmark region.',

diff --git a/lighthouse-core/audits/accessibility/color-contrast.js b/lighthouse-core/audits/accessibility/color-contrast.js
@@ -19,7 +19,6 @@ class ColorContrast extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'color-contrast',
       description: 'Background and foreground colors have a sufficient contrast ratio.',
       failureDescription: 'Background and foreground colors do not have a ' +

diff --git a/lighthouse-core/audits/accessibility/definition-list.js b/lighthouse-core/audits/accessibility/definition-list.js
@@ -18,7 +18,6 @@ class DefinitionList extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'definition-list',
       description: '`<dl>`\'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>` ' +
           'or `<template>` elements.',

diff --git a/lighthouse-core/audits/accessibility/dlitem.js b/lighthouse-core/audits/accessibility/dlitem.js
@@ -18,7 +18,6 @@ class DLItem extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'dlitem',
       description: 'Definition list items are wrapped in `<dl>` elements.',
       failureDescription: 'Definition list items are not wrapped in `<dl>` elements.',

diff --git a/lighthouse-core/audits/accessibility/document-title.js b/lighthouse-core/audits/accessibility/document-title.js
@@ -18,7 +18,6 @@ class DocumentTitle extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'document-title',
       description: 'Document has a `<title>` element.',
       failureDescription: 'Document does not have a `<title>` element.',

diff --git a/lighthouse-core/audits/accessibility/duplicate-id.js b/lighthouse-core/audits/accessibility/duplicate-id.js
@@ -18,7 +18,6 @@ class DuplicateId extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'duplicate-id',
       description: '`[id]` attributes on the page are unique.',
       failureDescription: '`[id]` attributes on the page are not unique.',

diff --git a/lighthouse-core/audits/accessibility/frame-title.js b/lighthouse-core/audits/accessibility/frame-title.js
@@ -18,7 +18,6 @@ class FrameTitle extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'frame-title',
       description: '`<frame>` or `<iframe>` elements have a title.',
       failureDescription: '`<frame>` or `<iframe>` elements do not have a title.',

diff --git a/lighthouse-core/audits/accessibility/html-has-lang.js b/lighthouse-core/audits/accessibility/html-has-lang.js
@@ -18,7 +18,6 @@ class HTMLHasLang extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'html-has-lang',
       description: '`<html>` element has a `[lang]` attribute.',
       failureDescription: '`<html>` element does not have a `[lang]` attribute.',

diff --git a/lighthouse-core/audits/accessibility/html-lang-valid.js b/lighthouse-core/audits/accessibility/html-lang-valid.js
@@ -18,7 +18,6 @@ class HTMLLangValid extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'html-lang-valid',
       description: '`<html>` element has a valid value for its `[lang]` attribute.',
       failureDescription: '`<html>` element does not have a valid value for ' +

diff --git a/lighthouse-core/audits/accessibility/image-alt.js b/lighthouse-core/audits/accessibility/image-alt.js
@@ -18,7 +18,6 @@ class ImageAlt extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'image-alt',
       description: 'Image elements have `[alt]` attributes.',
       failureDescription: 'Image elements do not have `[alt]` attributes.',

diff --git a/lighthouse-core/audits/accessibility/input-image-alt.js b/lighthouse-core/audits/accessibility/input-image-alt.js
@@ -18,7 +18,6 @@ class InputImageAlt extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'input-image-alt',
       description: '`<input type="image">` elements have `[alt]` text.',
       failureDescription: '`<input type="image">` elements do not have `[alt]` text.',

diff --git a/lighthouse-core/audits/accessibility/label.js b/lighthouse-core/audits/accessibility/label.js
@@ -18,7 +18,6 @@ class Label extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'label',
       description: 'Form elements have associated labels.',
       failureDescription: 'Form elements do not have associated labels.',

diff --git a/lighthouse-core/audits/accessibility/layout-table.js b/lighthouse-core/audits/accessibility/layout-table.js
@@ -19,7 +19,6 @@ class LayoutTable extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'layout-table',
       description: 'Presentational `<table>` elements avoid using `<th>`, `<caption>` or the ' +
           '`[summary]` attribute.',

diff --git a/lighthouse-core/audits/accessibility/link-name.js b/lighthouse-core/audits/accessibility/link-name.js
@@ -18,7 +18,6 @@ class LinkName extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'link-name',
       description: 'Links have a discernible name.',
       failureDescription: 'Links do not have a discernable name.',

diff --git a/lighthouse-core/audits/accessibility/list.js b/lighthouse-core/audits/accessibility/list.js
@@ -18,7 +18,6 @@ class List extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'list',
       description: 'Lists contain only `<li>` elements and script supporting elements ' +
           '(`<script>` and `<template>`).',

diff --git a/lighthouse-core/audits/accessibility/listitem.js b/lighthouse-core/audits/accessibility/listitem.js
@@ -18,7 +18,6 @@ class ListItem extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'listitem',
       description: 'List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements.',
       failureDescription: 'List items (`<li>`) are not contained within `<ul>` ' +

diff --git a/lighthouse-core/audits/accessibility/meta-refresh.js b/lighthouse-core/audits/accessibility/meta-refresh.js
@@ -18,7 +18,6 @@ class MetaRefresh extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'meta-refresh',
       description: 'The document does not use `<meta http-equiv="refresh">`.',
       failureDescription: 'The document uses `<meta http-equiv="refresh">`.',

diff --git a/lighthouse-core/audits/accessibility/meta-viewport.js b/lighthouse-core/audits/accessibility/meta-viewport.js
@@ -18,7 +18,6 @@ class MetaViewport extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'meta-viewport',
       description: '`[user-scalable="no"]` is not used in the `<meta name="viewport">` ' +
           'element and the `[maximum-scale]` attribute is not less than 5.',

diff --git a/lighthouse-core/audits/accessibility/object-alt.js b/lighthouse-core/audits/accessibility/object-alt.js
@@ -18,7 +18,6 @@ class ObjectAlt extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'object-alt',
       description: '`<object>` elements have `[alt]` text.',
       failureDescription: '`<object>` elements do not have `[alt]` text.',

diff --git a/lighthouse-core/audits/accessibility/tabindex.js b/lighthouse-core/audits/accessibility/tabindex.js
@@ -18,7 +18,6 @@ class TabIndex extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'tabindex',
       description: 'No element has a `[tabindex]` value greater than 0.',
       failureDescription: 'Some elements have a `[tabindex]` value greater than 0.',

diff --git a/lighthouse-core/audits/accessibility/td-headers-attr.js b/lighthouse-core/audits/accessibility/td-headers-attr.js
@@ -19,7 +19,6 @@ class TDHeadersAttr extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'td-headers-attr',
       description: 'Cells in a `<table>` element that use the `[headers]` attribute only refer ' +
           'to other cells of that same table.',

diff --git a/lighthouse-core/audits/accessibility/th-has-data-cells.js b/lighthouse-core/audits/accessibility/th-has-data-cells.js
@@ -18,7 +18,6 @@ class THHasDataCells extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'th-has-data-cells',
       description: '`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have ' +
           'data cells they describe.',

diff --git a/lighthouse-core/audits/accessibility/valid-lang.js b/lighthouse-core/audits/accessibility/valid-lang.js
@@ -18,7 +18,6 @@ class ValidLang extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'valid-lang',
       description: '`[lang]` attributes have a valid value.',
       failureDescription: '`[lang]` attributes do not have a valid value.',

diff --git a/lighthouse-core/audits/accessibility/video-caption.js b/lighthouse-core/audits/accessibility/video-caption.js
@@ -18,7 +18,6 @@ class VideoCaption extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'video-caption',
       description: '`<video>` elements contain a `<track>` element with `[kind="captions"]`.',
       failureDescription: '`<video>` elements do not contain a `<track>` element ' +

diff --git a/lighthouse-core/audits/accessibility/video-description.js b/lighthouse-core/audits/accessibility/video-description.js
@@ -18,7 +18,6 @@ class VideoDescription extends AxeAudit {
    */
   static get meta() {
     return {
-      category: 'Accessibility',
       name: 'video-description',
       description: '`<video>` elements contain a `<track>` element with `[kind="description"]`.',
       failureDescription: '`<video>` elements do not contain a `<track>` element with ' +

diff --git a/lighthouse-core/audits/audit.js b/lighthouse-core/audits/audit.js
@@ -157,7 +157,6 @@ class Audit {
       informative: audit.meta.informative,
       manual: audit.meta.manual,
       name: audit.meta.name,
-      category: audit.meta.category,
       description: auditDescription,
       helpText: audit.meta.helpText,
       details: result.details,

diff --git a/lighthouse-core/audits/byte-efficiency/offscreen-images.js b/lighthouse-core/audits/byte-efficiency/offscreen-images.js
@@ -24,7 +24,6 @@ class OffscreenImages extends ByteEfficiencyAudit {
    */
   static get meta() {
     return {
-      category: 'Images',
       name: 'offscreen-images',
       description: 'Offscreen images',
       informative: true,

diff --git a/lighthouse-core/audits/byte-efficiency/total-byte-weight.js b/lighthouse-core/audits/byte-efficiency/total-byte-weight.js
@@ -22,7 +22,6 @@ class TotalByteWeight extends ByteEfficiencyAudit {
    */
   static get meta() {
     return {
-      category: 'Network',
       name: 'total-byte-weight',
       optimalValue: `< ${this.bytesToKbString(OPTIMAL_VALUE)}`,
       description: 'Avoids enormous network payloads',

diff --git a/lighthouse-core/audits/byte-efficiency/unused-css-rules.js b/lighthouse-core/audits/byte-efficiency/unused-css-rules.js
@@ -15,7 +15,6 @@ class UnusedCSSRules extends ByteEfficiencyAudit {
    */
   static get meta() {
     return {
-      category: 'CSS',
       name: 'unused-css-rules',
       description: 'Unused CSS rules',
       informative: true,

diff --git a/lighthouse-core/audits/byte-efficiency/unused-javascript.js b/lighthouse-core/audits/byte-efficiency/unused-javascript.js
@@ -15,7 +15,6 @@ class UnusedJavaScript extends ByteEfficiencyAudit {
    */
   static get meta() {
     return {
-      category: 'Performance',
       name: 'unused-javascript',
       description: 'Unused JavaScript',
       informative: true,

diff --git a/lighthouse-core/audits/byte-efficiency/uses-optimized-images.js b/lighthouse-core/audits/byte-efficiency/uses-optimized-images.js
@@ -20,7 +20,6 @@ class UsesOptimizedImages extends ByteEfficiencyAudit {
    */
   static get meta() {
     return {
-      category: 'Images',
       name: 'uses-optimized-images',
       description: 'Optimize images',
       informative: true,

diff --git a/lighthouse-core/audits/byte-efficiency/uses-request-compression.js b/lighthouse-core/audits/byte-efficiency/uses-request-compression.js
@@ -21,7 +21,6 @@ class ResponsesAreCompressed extends ByteEfficiencyAudit {
    */
   static get meta() {
     return {
-      category: 'Performance',
       name: 'uses-request-compression',
       informative: true,
       description: 'Enable text compression',

diff --git a/lighthouse-core/audits/byte-efficiency/uses-responsive-images.js b/lighthouse-core/audits/byte-efficiency/uses-responsive-images.js
@@ -25,7 +25,6 @@ class UsesResponsiveImages extends ByteEfficiencyAudit {
    */
   static get meta() {
     return {
-      category: 'Images',
       name: 'uses-responsive-images',
       description: 'Properly size images',
       informative: true,

diff --git a/lighthouse-core/audits/byte-efficiency/uses-webp-images.js b/lighthouse-core/audits/byte-efficiency/uses-webp-images.js
@@ -20,7 +20,6 @@ class UsesWebPImages extends ByteEfficiencyAudit {
    */
   static get meta() {
     return {
-      category: 'Images',
       name: 'uses-webp-images',
       description: 'Serve images as WebP',
       informative: true,

diff --git a/lighthouse-core/audits/cache-start-url.js b/lighthouse-core/audits/cache-start-url.js
@@ -13,7 +13,6 @@ class CacheStartUrl extends Audit {
    */
   static get meta() {
     return {
-      category: 'Manifest',
       name: 'cache-start-url',
       description: 'Cache contains start_url from manifest (alpha)',
       failureDescription: 'Cache does not contain start_url from manifest (alpha)',

diff --git a/lighthouse-core/audits/consistently-interactive.js b/lighthouse-core/audits/consistently-interactive.js
@@ -30,7 +30,6 @@ class ConsistentlyInteractiveMetric extends Audit {
    */
   static get meta() {
     return {
-      category: 'Performance',
       name: 'consistently-interactive',
       description: 'Consistently Interactive (beta)',
       helpText: 'Consistently Interactive marks the time at which the page is ' +

diff --git a/lighthouse-core/audits/content-width.js b/lighthouse-core/audits/content-width.js
@@ -13,7 +13,6 @@ class ContentWidth extends Audit {
    */
   static get meta() {
     return {
-      category: 'Mobile Friendly',
       name: 'content-width',
       description: 'Content is sized correctly for the viewport',
       failureDescription: 'Content is not sized correctly for the viewport',

diff --git a/lighthouse-core/audits/critical-request-chains.js b/lighthouse-core/audits/critical-request-chains.js
@@ -14,7 +14,6 @@ class CriticalRequestChains extends Audit {
    */
   static get meta() {
     return {
-      category: 'Performance',
       name: 'critical-request-chains',
       description: 'Critical Request Chains',
       informative: true,