dom-accessibility-api - npm Package Compare versions

Comparing version 0.1.0 to 0.2.0

CHANGELOG.md

 # [0.1.0](https://github.com/eps1lon/dom-accessibility-api/compare/v0.0.1...v0.1.0) (2019-11-05)
 
+## 0.2.0
 
+### Minor Changes
+
+- eb86842: Add option to mock window.getComputedStyle
+
+  This option has two use cases in mind:
+
+  1. fake the style and assume everything is visible.
+     This increases performance (window.getComputedStyle) is expensive) by not distinguishing between various levels of visual impairments. If one can't see the name with a screen reader then neither will a sighted user
+  2. Wrap a cache provider around `window.getComputedStyle`. We don't implement any because the returned `CSSStyleDeclaration` is only live in a browser. `jsdom` does not implement live declarations.
+
 ### Bug Fixes
 
-* Fix test name_heading-combobox ([#16](https://github.com/eps1lon/dom-accessibility-api/issues/16)) ([e969395](https://github.com/eps1lon/dom-accessibility-api/commit/e969395d8da637862993aeee0b86f379342d56f2))
+- Fix test name_heading-combobox ([#16](https://github.com/eps1lon/dom-accessibility-api/issues/16)) ([e969395](https://github.com/eps1lon/dom-accessibility-api/commit/e969395d8da637862993aeee0b86f379342d56f2))
 
-
 ### Features
 
-* **name:** Consider prohibited naming ([#19](https://github.com/eps1lon/dom-accessibility-api/issues/19)) ([6692d6b](https://github.com/eps1lon/dom-accessibility-api/commit/6692d6bd86030da9b340b0895f623394b21e2656))
-* Consider all cases of "name from content" ([#13](https://github.com/eps1lon/dom-accessibility-api/issues/13)) ([835cb76](https://github.com/eps1lon/dom-accessibility-api/commit/835cb76e7c1dd577af1fa891ad849385e58fcd56))
-* Consider content from before and after pseudo elements ([#5](https://github.com/eps1lon/dom-accessibility-api/issues/5)) ([0987426](https://github.com/eps1lon/dom-accessibility-api/commit/0987426734cc7b980a8edf39435820a24ea2a162))
-* Fork elementToRole from aria-query ([#7](https://github.com/eps1lon/dom-accessibility-api/issues/7)) ([fe4fab5](https://github.com/eps1lon/dom-accessibility-api/commit/fe4fab57786324705c4ac4434de8aabd3e7bbc09))
+- **name:** Consider prohibited naming ([#19](https://github.com/eps1lon/dom-accessibility-api/issues/19)) ([6692d6b](https://github.com/eps1lon/dom-accessibility-api/commit/6692d6bd86030da9b340b0895f623394b21e2656))
+- Consider all cases of "name from content" ([#13](https://github.com/eps1lon/dom-accessibility-api/issues/13)) ([835cb76](https://github.com/eps1lon/dom-accessibility-api/commit/835cb76e7c1dd577af1fa891ad849385e58fcd56))
+- Consider content from before and after pseudo elements ([#5](https://github.com/eps1lon/dom-accessibility-api/issues/5)) ([0987426](https://github.com/eps1lon/dom-accessibility-api/commit/0987426734cc7b980a8edf39435820a24ea2a162))
+- Fork elementToRole from aria-query ([#7](https://github.com/eps1lon/dom-accessibility-api/issues/7)) ([fe4fab5](https://github.com/eps1lon/dom-accessibility-api/commit/fe4fab57786324705c4ac4434de8aabd3e7bbc09))

dist/accessible-name.d.ts

@@ -5,9 +5,15 @@ /**
 /**
+ * interface for an options-bag where `window.getComputedStyle` can be mocked
+ */
+interface GetComputedStyleOptions {
+    getComputedStyle?: typeof window.getComputedStyle;
+}
+/**
  * implements https://w3c.github.io/accname/#mapping_additional_nd_te
  * @param root
- * @param context
+ * @param [options]
+ * @parma [options.getComputedStyle] - mock window.getComputedStyle. Needs `content`, `display` and `visibility`
  */
-export declare function computeAccessibleName(root: Element, context?: {
-    isReferenced?: boolean;
-}): string;
+export declare function computeAccessibleName(root: Element, options?: GetComputedStyleOptions): string;
+export {};
 //# sourceMappingURL=accessible-name.d.ts.map

dist/accessible-name.js

@@ -10,3 +10,19 @@ "use strict";
 const getRole_1 = __importDefault(require("./getRole"));
+const util_1 = require("./util");
 /**
+ * Small utility that handles all the JS quirks with `this` which is important
+ * if no mock is provided.
+ * @param element
+ * @param options - These are not optional to prevent accidentally calling it without options in `computeAccessibleName`
+ */
+function createGetComputedStyle(element, options) {
+    const window = util_1.safeWindow(element);
+    const { 
+    // This might be overengineered. I don't know what happens if I call
+    // window.getComputedStyle(elementFromAnotherWindow) or if I don't bind it
+    // the type declarations don't require a `this`
+    getComputedStyle = window.getComputedStyle.bind(window) } = options;
+    return getComputedStyle;
+}
+/**
  *
@@ -20,41 +36,27 @@ * @param {string} string -
 /**
- * TODO
+ * https://w3c.github.io/aria/#namefromprohibited
  */
 function prohibitsNaming(node) {
-    return false;
+    return hasAnyConcreteRoles(node, [
+        "caption",
+        "code",
+        "deletion",
+        "emphasis",
+        "generic",
+        "insertion",
+        "paragraph",
+        "presentation",
+        "strong",
+        "subscript",
+        "superscript"
+    ]);
 }
-function isElement(node) {
-    return (
-    // @ts-ignore
-    node !== null && node instanceof node.ownerDocument.defaultView.Element);
-}
-function isHTMLInputElement(node) {
-    return (isElement(node) &&
-        // @ts-ignore
-        node instanceof node.ownerDocument.defaultView.HTMLInputElement);
-}
-function isHTMLSelectElement(node) {
-    return (isElement(node) &&
-        // @ts-ignore
-        node instanceof node.ownerDocument.defaultView.HTMLSelectElement);
-}
-function isHTMLTextAreaElement(node) {
-    return (isElement(node) &&
-        // @ts-ignore
-        node instanceof node.ownerDocument.defaultView.HTMLTextAreaElement);
-}
-function safeWindow(node) {
-    const { defaultView } = node.ownerDocument === null ? node : node.ownerDocument;
-    if (defaultView === null) {
-        throw new TypeError("no window available");
-    }
-    return defaultView;
-}
 /**
  *
- * @param {Node} node -
+ * @param node -
+ * @param options - These are not optional to prevent accidentally calling it without options in `computeAccessibleName`
  * @returns {boolean} -
  */
-function isHidden(node) {
-    if (!isElement(node)) {
+function isHidden(node, options) {
+    if (!util_1.isElement(node)) {
         return false;
@@ -66,3 +68,3 @@ }
     }
-    const style = safeWindow(node).getComputedStyle(node);
+    const style = createGetComputedStyle(node, options)(node);
     return (style.getPropertyValue("display") === "none" ||
@@ -78,5 +80,9 @@ style.getPropertyValue("visibility") === "hidden");
 function idRefs(node, attributeName) {
-    if (isElement(node) && node.hasAttribute(attributeName)) {
+    if (util_1.isElement(node) && node.hasAttribute(attributeName)) {
+        // safe due to hasAttribute check
+        // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
         const ids = node.getAttribute(attributeName).split(" ");
         return ids
+            // safe since it can't be null for an Element
+            // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
             .map(id => node.ownerDocument.getElementById(id))
@@ -106,3 +112,3 @@ .filter((element) => element !== null
 function hasAbstractRole(node, role) {
-    if (!isElement(node)) {
+    if (!util_1.isElement(node)) {
         return false;
@@ -124,3 +130,3 @@ }
 function hasAnyConcreteRoles(node, roles) {
-    if (isElement(node)) {
+    if (util_1.isElement(node)) {
         return roles.indexOf(getRole_1.default(node)) !== -1;
@@ -143,3 +149,3 @@ }
 function querySelectedOptions(listbox) {
-    if (isHTMLSelectElement(listbox)) {
+    if (util_1.isHTMLSelectElement(listbox)) {
         // IE11 polyfill
@@ -199,3 +205,3 @@ return (listbox.selectedOptions || querySelectorAllSubtree(listbox, "[selected]"));
 function getValueOfTextbox(element) {
-    if (isHTMLInputElement(element) || isHTMLTextAreaElement(element)) {
+    if (util_1.isHTMLInputElement(element) || util_1.isHTMLTextAreaElement(element)) {
         return element.value;
@@ -216,14 +222,8 @@ }
  * @param root
- * @param context
+ * @param [options]
+ * @parma [options.getComputedStyle] - mock window.getComputedStyle. Needs `content`, `display` and `visibility`
  */
-function computeAccessibleName(root, context = {}) {
-    /**
-     * @type {Set<Node>}
-     */
+function computeAccessibleName(root, options = {}) {
     const consultedNodes = new Set();
-    /**
-     * @type {FlatString}
-     */
-    let totalAccumulatedText = "";
-    if (prohibitsNaming(root) && !context.isReferenced) {
+    if (prohibitsNaming(root)) {
         return "";
@@ -234,4 +234,4 @@ }
         let accumulatedText = "";
-        if (isElement(node)) {
-            const pseudoBefore = safeWindow(node).getComputedStyle(node, "::before");
+        if (util_1.isElement(node)) {
+            const pseudoBefore = createGetComputedStyle(node, options)(node, "::before");
             const beforeContent = getTextualContent(pseudoBefore);
@@ -247,11 +247,9 @@ accumulatedText = `${beforeContent} ${accumulatedText}`;
             // TODO: Unclear why display affects delimiter
-            const display = isElement(node) &&
-                safeWindow(node)
-                    .getComputedStyle(node)
-                    .getPropertyValue("display");
+            const display = util_1.isElement(node) &&
+                createGetComputedStyle(node, options)(node).getPropertyValue("display");
             const separator = display !== "inline" ? " " : "";
             accumulatedText += `${separator}${result}`;
         }
-        if (isElement(node)) {
-            const pseudoAfter = safeWindow(node).getComputedStyle(node, ":after");
+        if (util_1.isElement(node)) {
+            const pseudoAfter = createGetComputedStyle(node, options)(node, ":after");
             const afterContent = getTextualContent(pseudoAfter);
@@ -266,3 +264,3 @@ accumulatedText = `${accumulatedText} ${afterContent}`;
     function computeAttributeTextAlternative(node) {
-        if (!isElement(node)) {
+        if (!util_1.isElement(node)) {
             return null;
@@ -280,3 +278,3 @@ }
         }
-        if (isHTMLInputElement(node) && node.type === "button") {
+        if (util_1.isHTMLInputElement(node) && node.type === "button") {
             consultedNodes.add(node);
@@ -288,3 +286,3 @@ return node.getAttribute("value") || "";
     function computeElementTextAlternative(node) {
-        if (!isHTMLInputElement(node)) {
+        if (!util_1.isHTMLInputElement(node)) {
             return null;
@@ -324,2 +322,3 @@ }
         // special casing, cheating to make tests pass
+        // https://github.com/w3c/accname/issues/67
         if (hasAnyConcreteRoles(current, ["menu"])) {
@@ -330,3 +329,3 @@ consultedNodes.add(current);
         // 2A
-        if (isHidden(current) && !context.isReferenced) {
+        if (isHidden(current, options) && !context.isReferenced) {
             consultedNodes.add(current);
@@ -350,5 +349,7 @@ return "";
         // 2C
+        // Changed from the spec in anticipation of https://github.com/w3c/accname/issues/64
+        // spec says we should only consider skipping if we have a non-empty label
         const skipToStep2E = context.recursion && isControl(current);
         if (!skipToStep2E) {
-            const ariaLabel = ((isElement(current) && current.getAttribute("aria-label")) ||
+            const ariaLabel = ((util_1.isElement(current) && current.getAttribute("aria-label")) ||
                 "").trim();
@@ -360,3 +361,3 @@ if (ariaLabel !== "") {
             // 2D
-            if (!hasAnyConcreteRoles(current, ["none", "presentation"])) {
+            if (!isMarkedPresentational(current)) {
                 const elementTextAlternative = computeElementTextAlternative(current);
@@ -381,3 +382,3 @@ if (elementTextAlternative !== null) {
                     // defined per test `name_heading_combobox`
-                    return isHTMLInputElement(current) ? current.value : "";
+                    return util_1.isHTMLInputElement(current) ? current.value : "";
                 }
@@ -397,5 +398,9 @@ return Array.from(selectedOptions)
                 if (current.hasAttribute("aria-valuetext")) {
+                    // safe due to hasAttribute guard
+                    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
                     return current.getAttribute("aria-valuetext");
                 }
                 if (current.hasAttribute("aria-valuenow")) {
+                    // safe due to hasAttribute guard
+                    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
                     return current.getAttribute("aria-valuenow");
@@ -411,5 +416,5 @@ }
         }
-        // 2F
+        // 2F: https://w3c.github.io/accname/#step2F
         if (allowsNameFromContent(current) ||
-            (isElement(current) && context.isReferenced) ||
+            (util_1.isElement(current) && context.isReferenced) ||
             isNativeHostLanguageTextAlternativeElement(current) ||
@@ -416,0 +421,0 @@ isDescendantOfNativeHostLanguageTextAlternativeElement(current)) {

dist/getRole.js

@@ -73,2 +73,3 @@ "use strict";
             }
+            break;
         case "IMG":
@@ -78,3 +79,4 @@ if ((element.getAttribute("alt") || "").length > 0) {
             }
-        case "INPUT":
+            break;
+        case "INPUT": {
             const { type } = element;
@@ -108,2 +110,3 @@ switch (type) {
             }
+        }
         case "SELECT":
@@ -120,2 +123,4 @@ if (element.hasAttribute("multiple") ||
     if (element.hasAttribute("role")) {
+        // safe due to hasAttribute check
+        // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
         const [explicitRole] = element
@@ -122,0 +127,0 @@ .getAttribute("role")

package.json

 {
 	"name": "dom-accessibility-api",
-	"version": "0.1.0",
+	"version": "0.2.0",
 	"main": "dist/index.js",
 	"types": "dist/index.d.ts",
 	"license": "MIT",
+	"repository": {
+		"type": "git",
+		"url": "https://github.com/eps1lon/dom-accessibility-api.git"
+	},
 	"files": [
@@ -14,2 +18,4 @@ "dist/"
 		"lint": "eslint --report-unused-disable-directives \"sources/**/*.ts\"",
+		"release:prepare": "yarn changeset version",
+		"release": "yarn changeset publish",
 		"test": "jest",
@@ -27,32 +33,28 @@ "test:ci": "jest --ci --config jest.ci.config.js --runInBand",
 	"devDependencies": {
-		"@babel/core": "^7.6.2",
-		"@babel/preset-env": "^7.6.2",
-		"@babel/preset-typescript": "^7.6.0",
-		"@semantic-release/changelog": "^3.0.5",
-		"@semantic-release/commit-analyzer": "^6.3.2",
-		"@semantic-release/git": "^7.0.18",
-		"@semantic-release/npm": "^5.3.4",
-		"@semantic-release/release-notes-generator": "^7.3.2",
-		"@testing-library/dom": "^6.6.0",
-		"@types/jest": "^24.0.18",
-		"@typescript-eslint/eslint-plugin": "^2.5.0",
+		"@babel/core": "^7.7.4",
+		"@babel/preset-env": "^7.7.4",
+		"@babel/preset-typescript": "^7.7.4",
+		"@changesets/cli": "^2.4.0",
+		"@testing-library/dom": "^6.10.1",
+		"@types/jest": "^24.0.23",
+		"@typescript-eslint/parser": "^2.9.0",
+		"@typescript-eslint/eslint-plugin": "^2.9.0",
 		"concurrently": "^5.0.0",
-		"cypress": "^3.4.1",
-		"eslint": "^6.6.0",
+		"cypress": "^3.6.1",
+		"eslint": "^6.7.1",
 		"jest": "^24.9.0",
 		"jest-diff": "^24.9.0",
 		"jest-environment-jsdom-thirteen": "^1.0.1",
-		"jest-junit": "^8.0.0",
+		"jest-junit": "^9.0.0",
 		"js-yaml": "^3.13.1",
-		"jsdom": "^15.1.1",
+		"jsdom": "^15.2.1",
 		"minimatch": "^3.0.4",
-		"mocha": "^6.2.1",
+		"mocha": "^6.2.2",
 		"mocha-sugar-free": "^1.4.0",
-		"prettier": "^1.18.2",
+		"prettier": "^1.19.1",
 		"q": "^1.5.1",
 		"request": "^2.34",
-		"request-promise-native": "^1.0.7",
-		"semantic-release": "^15.13.30",
+		"request-promise-native": "^1.0.8",
 		"serve": "^11.2.0",
-		"typescript": "^3.6.3"
+		"typescript": "^3.7.2"
 	},
@@ -62,9 +64,10 @@ "prettier": {
 	},
-	"dependencies": {
-		"@typescript-eslint/parser": "^2.5.0"
-	},
-	"repository": {
-		"type": "git",
-		"url": "https://github.com/eps1lon/dom-accessibility-api.git"
+	"keywords": [
+		"accessibility",
+		"ARIA",
+		"accname"
+	],
+	"publishConfig": {
+		"access": "public"
 	}
 }

No alert changes

Improved metrics

Total package byte prevSize

51018

increased by10.84%

Dependency count

0

decreased by-100%

Dev dependency count

26

decreased by-13.33%

Number of package files

19

increased by26.67%

Lines of code

629

increased by9.58%

Dependency changes

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• - Removedslice-ansi@2.1.0(transitive)

• - Removedsprintf-js@1.0.3(transitive)

• - Removedstring-width@3.1.04.2.3(transitive)

• - Removedstrip-ansi@5.2.06.0.1(transitive)

• - Removedstrip-json-comments@3.1.1(transitive)

• - Removedsupports-color@5.5.07.2.0(transitive)

• - Removedtable@5.4.6(transitive)

• - Removedtext-table@0.2.0(transitive)

• - Removedthrough@2.3.8(transitive)

• - Removedtmp@0.0.33(transitive)

• - Removedtslib@1.14.1(transitive)

• - Removedtsutils@3.21.0(transitive)

• - Removedtype-check@0.3.2(transitive)

• - Removedtype-fest@0.21.30.8.1(transitive)

• - Removedtypescript@5.5.3(transitive)

• - Removeduri-js@4.4.1(transitive)

• - Removedv8-compile-cache@2.4.0(transitive)

• - Removedwhich@1.3.1(transitive)

• - Removedword-wrap@1.2.5(transitive)

• - Removedwrappy@1.0.2(transitive)

• - Removedwrite@1.0.3(transitive)