How to use isSingleElementRoot method in Playwright Internal

Best JavaScript code snippet using playwright-internal

compiler-core.cjs.js

Source:compiler-core.cjs.js Github

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...1081 0x9e: 0x017e,1082 0x9f: 0x01781083};1084function hoistStatic(root, context) {1085 walk(root.children, context, new Map(), isSingleElementRoot(root, root.children[0]));1086}1087function isSingleElementRoot(root, child) {1088 const { children } = root;1089 return (children.length === 1 &&1090 child.type === 1 /* ELEMENT */ &&1091 !isSlotOutlet(child));1092}1093function walk(children, context, resultCache, doNotHoistNode = false) {1094 for (let i = 0; i < children.length; i++) {1095 const child = children[i];1096 // only plain elements are eligible for hoisting.1097 if (child.type === 1 /* ELEMENT */ &&1098 child.tagType === 0 /* ELEMENT */) {1099 if (!doNotHoistNode && isStaticNode(child, resultCache)) {1100 child.codegenNode = context.hoist(child.codegenNode);1101 continue;1102 }1103 else {1104 // node may contain dynamic children, but its props may be eligible for1105 // hoisting.1106 const flag = getPatchFlag(child);1107 if (!flag ||1108 flag === 32 /* NEED_PATCH */ ||1109 flag === 1 /* TEXT */) {1110 let codegenNode = child.codegenNode;1111 if (codegenNode.callee === APPLY_DIRECTIVES) {1112 codegenNode = codegenNode.arguments[0];1113 }1114 const props = codegenNode.arguments[1];1115 if (props && props !== `null`) {1116 codegenNode.arguments[1] = context.hoist(props);1117 }1118 }1119 }1120 }1121 if (child.type === 1 /* ELEMENT */) {1122 walk(child.children, context, resultCache);1123 }1124 else if (child.type === 11 /* FOR */) {1125 // Do not hoist v-for single child because it has to be a block1126 walk(child.children, context, resultCache, child.children.length === 1);1127 }1128 else if (child.type === 9 /* IF */) {1129 for (let i = 0; i < child.branches.length; i++) {1130 const branchChildren = child.branches[i].children;1131 // Do not hoist v-if single child because it has to be a block1132 walk(branchChildren, context, resultCache, branchChildren.length === 1);1133 }1134 }1135 }1136}1137function getPatchFlag(node) {1138 let codegenNode = node.codegenNode;1139 if (codegenNode.callee === APPLY_DIRECTIVES) {1140 codegenNode = codegenNode.arguments[0];1141 }1142 const flag = codegenNode.arguments[3];1143 return flag ? parseInt(flag, 10) : undefined;1144}1145function isStaticNode(node, resultCache) {1146 switch (node.type) {1147 case 1 /* ELEMENT */:1148 if (node.tagType !== 0 /* ELEMENT */) {1149 return false;1150 }1151 if (resultCache.has(node)) {1152 return resultCache.get(node);1153 }1154 const flag = getPatchFlag(node);1155 if (!flag) {1156 // element self is static. check its children.1157 for (let i = 0; i < node.children.length; i++) {1158 if (!isStaticNode(node.children[i], resultCache)) {1159 resultCache.set(node, false);1160 return false;1161 }1162 }1163 resultCache.set(node, true);1164 return true;1165 }1166 else {1167 return false;1168 }1169 case 2 /* TEXT */:1170 case 3 /* COMMENT */:1171 return true;1172 case 9 /* IF */:1173 case 11 /* FOR */:1174 case 5 /* INTERPOLATION */:1175 case 8 /* COMPOUND_EXPRESSION */:1176 return false;1177 default:1178 return false;1179 }1180}1181function createTransformContext(root, { prefixIdentifiers = false, hoistStatic = false, nodeTransforms = [], directiveTransforms = {}, onError = defaultOnError }) {1182 const context = {1183 root,1184 helpers: new Set(),1185 components: new Set(),1186 directives: new Set(),1187 hoists: [],1188 identifiers: {},1189 scopes: {1190 vFor: 0,1191 vSlot: 0,1192 vPre: 0,1193 vOnce: 01194 },1195 prefixIdentifiers,1196 hoistStatic,1197 nodeTransforms,1198 directiveTransforms,1199 onError,1200 parent: null,1201 currentNode: root,1202 childIndex: 0,1203 helper(name) {1204 context.helpers.add(name);1205 return name;1206 },1207 helperString(name) {1208 return ((context.prefixIdentifiers ? `` : `_`) +1209 helperNameMap[context.helper(name)]);1210 },1211 replaceNode(node) {1212 /* istanbul ignore if */1213 {1214 if (!context.currentNode) {1215 throw new Error(`Node being replaced is already removed.`);1216 }1217 if (!context.parent) {1218 throw new Error(`Cannot replace root node.`);1219 }1220 }1221 context.parent.children[context.childIndex] = context.currentNode = node;1222 },1223 removeNode(node) {1224 if ( !context.parent) {1225 throw new Error(`Cannot remove root node.`);1226 }1227 const list = context.parent.children;1228 const removalIndex = node1229 ? list.indexOf(node)1230 : context.currentNode1231 ? context.childIndex1232 : -1;1233 /* istanbul ignore if */1234 if ( removalIndex < 0) {1235 throw new Error(`node being removed is not a child of current parent`);1236 }1237 if (!node || node === context.currentNode) {1238 // current node removed1239 context.currentNode = null;1240 context.onNodeRemoved();1241 }1242 else {1243 // sibling node removed1244 if (context.childIndex > removalIndex) {1245 context.childIndex--;1246 context.onNodeRemoved();1247 }1248 }1249 context.parent.children.splice(removalIndex, 1);1250 },1251 onNodeRemoved: () => { },1252 addIdentifiers(exp) {1253 // identifier tracking only happens in non-browser builds.1254 {1255 if (isString(exp)) {1256 addId(exp);1257 }1258 else if (exp.identifiers) {1259 exp.identifiers.forEach(addId);1260 }1261 else if (exp.type === 4 /* SIMPLE_EXPRESSION */) {1262 addId(exp.content);1263 }1264 }1265 },1266 removeIdentifiers(exp) {1267 {1268 if (isString(exp)) {1269 removeId(exp);1270 }1271 else if (exp.identifiers) {1272 exp.identifiers.forEach(removeId);1273 }1274 else if (exp.type === 4 /* SIMPLE_EXPRESSION */) {1275 removeId(exp.content);1276 }1277 }1278 },1279 hoist(exp) {1280 context.hoists.push(exp);1281 return createSimpleExpression(`_hoisted_${context.hoists.length}`, false, exp.loc);1282 }1283 };1284 function addId(id) {1285 const { identifiers } = context;1286 if (identifiers[id] === undefined) {1287 identifiers[id] = 0;1288 }1289 identifiers[id]++;1290 }1291 function removeId(id) {1292 context.identifiers[id]--;1293 }1294 return context;1295}1296function transform(root, options) {1297 const context = createTransformContext(root, options);1298 traverseNode(root, context);1299 if (options.hoistStatic) {1300 hoistStatic(root, context);1301 }1302 finalizeRoot(root, context);1303}1304function finalizeRoot(root, context) {1305 const { helper } = context;1306 const { children } = root;1307 const child = children[0];1308 if (isSingleElementRoot(root, child) && child.codegenNode) {1309 // turn root element into a block1310 root.codegenNode = createBlockExpression(child.codegenNode.arguments, context);1311 }1312 else if (children.length === 1) {1313 // - single <slot/>, IfNode, ForNode: already blocks.1314 // - single text node: always patched.1315 // - transform calls without transformElement (only during tests)1316 // Just generate the node as-is1317 root.codegenNode = child;1318 }1319 else if (children.length > 1) {1320 // root has multiple nodes - return a fragment block.1321 root.codegenNode = createBlockExpression([helper(FRAGMENT), `null`, root.children], context);1322 } ...

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compiler-dom.global.js

Source:compiler-dom.global.js Github

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...1055 0x9e: 0x017e,1056 0x9f: 0x01781057 };1058 function hoistStatic(root, context) {1059 walk(root.children, context, new Map(), isSingleElementRoot(root, root.children[0]));1060 }1061 function isSingleElementRoot(root, child) {1062 const { children } = root;1063 return (children.length === 1 &&1064 child.type === 1 /* ELEMENT */ &&1065 !isSlotOutlet(child));1066 }1067 function walk(children, context, resultCache, doNotHoistNode = false) {1068 for (let i = 0; i < children.length; i++) {1069 const child = children[i];1070 // only plain elements are eligible for hoisting.1071 if (child.type === 1 /* ELEMENT */ &&1072 child.tagType === 0 /* ELEMENT */) {1073 if (!doNotHoistNode && isStaticNode(child, resultCache)) {1074 child.codegenNode = context.hoist(child.codegenNode);1075 continue;1076 }1077 else {1078 // node may contain dynamic children, but its props may be eligible for1079 // hoisting.1080 const flag = getPatchFlag(child);1081 if (!flag ||1082 flag === 32 /* NEED_PATCH */ ||1083 flag === 1 /* TEXT */) {1084 let codegenNode = child.codegenNode;1085 if (codegenNode.callee === APPLY_DIRECTIVES) {1086 codegenNode = codegenNode.arguments[0];1087 }1088 const props = codegenNode.arguments[1];1089 if (props && props !== `null`) {1090 codegenNode.arguments[1] = context.hoist(props);1091 }1092 }1093 }1094 }1095 if (child.type === 1 /* ELEMENT */) {1096 walk(child.children, context, resultCache);1097 }1098 else if (child.type === 11 /* FOR */) {1099 // Do not hoist v-for single child because it has to be a block1100 walk(child.children, context, resultCache, child.children.length === 1);1101 }1102 else if (child.type === 9 /* IF */) {1103 for (let i = 0; i < child.branches.length; i++) {1104 const branchChildren = child.branches[i].children;1105 // Do not hoist v-if single child because it has to be a block1106 walk(branchChildren, context, resultCache, branchChildren.length === 1);1107 }1108 }1109 }1110 }1111 function getPatchFlag(node) {1112 let codegenNode = node.codegenNode;1113 if (codegenNode.callee === APPLY_DIRECTIVES) {1114 codegenNode = codegenNode.arguments[0];1115 }1116 const flag = codegenNode.arguments[3];1117 return flag ? parseInt(flag, 10) : undefined;1118 }1119 function isStaticNode(node, resultCache) {1120 switch (node.type) {1121 case 1 /* ELEMENT */:1122 if (node.tagType !== 0 /* ELEMENT */) {1123 return false;1124 }1125 if (resultCache.has(node)) {1126 return resultCache.get(node);1127 }1128 const flag = getPatchFlag(node);1129 if (!flag) {1130 // element self is static. check its children.1131 for (let i = 0; i < node.children.length; i++) {1132 if (!isStaticNode(node.children[i], resultCache)) {1133 resultCache.set(node, false);1134 return false;1135 }1136 }1137 resultCache.set(node, true);1138 return true;1139 }1140 else {1141 return false;1142 }1143 case 2 /* TEXT */:1144 case 3 /* COMMENT */:1145 return true;1146 case 9 /* IF */:1147 case 11 /* FOR */:1148 case 5 /* INTERPOLATION */:1149 case 8 /* COMPOUND_EXPRESSION */:1150 return false;1151 default:1152 return false;1153 }1154 }1155 function createTransformContext(root, { prefixIdentifiers = false, hoistStatic = false, nodeTransforms = [], directiveTransforms = {}, onError = defaultOnError }) {1156 const context = {1157 root,1158 helpers: new Set(),1159 components: new Set(),1160 directives: new Set(),1161 hoists: [],1162 identifiers: {},1163 scopes: {1164 vFor: 0,1165 vSlot: 0,1166 vPre: 0,1167 vOnce: 01168 },1169 prefixIdentifiers,1170 hoistStatic,1171 nodeTransforms,1172 directiveTransforms,1173 onError,1174 parent: null,1175 currentNode: root,1176 childIndex: 0,1177 helper(name) {1178 context.helpers.add(name);1179 return name;1180 },1181 helperString(name) {1182 return ((context.prefixIdentifiers ? `` : `_`) +1183 helperNameMap[context.helper(name)]);1184 },1185 replaceNode(node) {1186 /* istanbul ignore if */1187 {1188 if (!context.currentNode) {1189 throw new Error(`Node being replaced is already removed.`);1190 }1191 if (!context.parent) {1192 throw new Error(`Cannot replace root node.`);1193 }1194 }1195 context.parent.children[context.childIndex] = context.currentNode = node;1196 },1197 removeNode(node) {1198 if ( !context.parent) {1199 throw new Error(`Cannot remove root node.`);1200 }1201 const list = context.parent.children;1202 const removalIndex = node1203 ? list.indexOf(node)1204 : context.currentNode1205 ? context.childIndex1206 : -1;1207 /* istanbul ignore if */1208 if ( removalIndex < 0) {1209 throw new Error(`node being removed is not a child of current parent`);1210 }1211 if (!node || node === context.currentNode) {1212 // current node removed1213 context.currentNode = null;1214 context.onNodeRemoved();1215 }1216 else {1217 // sibling node removed1218 if (context.childIndex > removalIndex) {1219 context.childIndex--;1220 context.onNodeRemoved();1221 }1222 }1223 context.parent.children.splice(removalIndex, 1);1224 },1225 onNodeRemoved: () => { },1226 addIdentifiers(exp) {1227 },1228 removeIdentifiers(exp) {1229 },1230 hoist(exp) {1231 context.hoists.push(exp);1232 return createSimpleExpression(`_hoisted_${context.hoists.length}`, false, exp.loc);1233 }1234 };1235 return context;1236 }1237 function transform(root, options) {1238 const context = createTransformContext(root, options);1239 traverseNode(root, context);1240 if (options.hoistStatic) {1241 hoistStatic(root, context);1242 }1243 finalizeRoot(root, context);1244 }1245 function finalizeRoot(root, context) {1246 const { helper } = context;1247 const { children } = root;1248 const child = children[0];1249 if (isSingleElementRoot(root, child) && child.codegenNode) {1250 // turn root element into a block1251 root.codegenNode = createBlockExpression(child.codegenNode.arguments, context);1252 }1253 else if (children.length === 1) {1254 // - single <slot/>, IfNode, ForNode: already blocks.1255 // - single text node: always patched.1256 // - transform calls without transformElement (only during tests)1257 // Just generate the node as-is1258 root.codegenNode = child;1259 }1260 else if (children.length > 1) {1261 // root has multiple nodes - return a fragment block.1262 root.codegenNode = createBlockExpression([helper(FRAGMENT), `null`, root.children], context);1263 } ...

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compiler-dom.esm-browser.js

Source:compiler-dom.esm-browser.js Github

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...1053 0x9e: 0x017e,1054 0x9f: 0x01781055};1056function hoistStatic(root, context) {1057 walk(root.children, context, new Map(), isSingleElementRoot(root, root.children[0]));1058}1059function isSingleElementRoot(root, child) {1060 const { children } = root;1061 return (children.length === 1 &&1062 child.type === 1 /* ELEMENT */ &&1063 !isSlotOutlet(child));1064}1065function walk(children, context, resultCache, doNotHoistNode = false) {1066 for (let i = 0; i < children.length; i++) {1067 const child = children[i];1068 // only plain elements are eligible for hoisting.1069 if (child.type === 1 /* ELEMENT */ &&1070 child.tagType === 0 /* ELEMENT */) {1071 if (!doNotHoistNode && isStaticNode(child, resultCache)) {1072 child.codegenNode = context.hoist(child.codegenNode);1073 continue;1074 }1075 else {1076 // node may contain dynamic children, but its props may be eligible for1077 // hoisting.1078 const flag = getPatchFlag(child);1079 if (!flag ||1080 flag === 32 /* NEED_PATCH */ ||1081 flag === 1 /* TEXT */) {1082 let codegenNode = child.codegenNode;1083 if (codegenNode.callee === APPLY_DIRECTIVES) {1084 codegenNode = codegenNode.arguments[0];1085 }1086 const props = codegenNode.arguments[1];1087 if (props && props !== `null`) {1088 codegenNode.arguments[1] = context.hoist(props);1089 }1090 }1091 }1092 }1093 if (child.type === 1 /* ELEMENT */) {1094 walk(child.children, context, resultCache);1095 }1096 else if (child.type === 11 /* FOR */) {1097 // Do not hoist v-for single child because it has to be a block1098 walk(child.children, context, resultCache, child.children.length === 1);1099 }1100 else if (child.type === 9 /* IF */) {1101 for (let i = 0; i < child.branches.length; i++) {1102 const branchChildren = child.branches[i].children;1103 // Do not hoist v-if single child because it has to be a block1104 walk(branchChildren, context, resultCache, branchChildren.length === 1);1105 }1106 }1107 }1108}1109function getPatchFlag(node) {1110 let codegenNode = node.codegenNode;1111 if (codegenNode.callee === APPLY_DIRECTIVES) {1112 codegenNode = codegenNode.arguments[0];1113 }1114 const flag = codegenNode.arguments[3];1115 return flag ? parseInt(flag, 10) : undefined;1116}1117function isStaticNode(node, resultCache) {1118 switch (node.type) {1119 case 1 /* ELEMENT */:1120 if (node.tagType !== 0 /* ELEMENT */) {1121 return false;1122 }1123 if (resultCache.has(node)) {1124 return resultCache.get(node);1125 }1126 const flag = getPatchFlag(node);1127 if (!flag) {1128 // element self is static. check its children.1129 for (let i = 0; i < node.children.length; i++) {1130 if (!isStaticNode(node.children[i], resultCache)) {1131 resultCache.set(node, false);1132 return false;1133 }1134 }1135 resultCache.set(node, true);1136 return true;1137 }1138 else {1139 return false;1140 }1141 case 2 /* TEXT */:1142 case 3 /* COMMENT */:1143 return true;1144 case 9 /* IF */:1145 case 11 /* FOR */:1146 case 5 /* INTERPOLATION */:1147 case 8 /* COMPOUND_EXPRESSION */:1148 return false;1149 default:1150 return false;1151 }1152}1153function createTransformContext(root, { prefixIdentifiers = false, hoistStatic = false, nodeTransforms = [], directiveTransforms = {}, onError = defaultOnError }) {1154 const context = {1155 root,1156 helpers: new Set(),1157 components: new Set(),1158 directives: new Set(),1159 hoists: [],1160 identifiers: {},1161 scopes: {1162 vFor: 0,1163 vSlot: 0,1164 vPre: 0,1165 vOnce: 01166 },1167 prefixIdentifiers,1168 hoistStatic,1169 nodeTransforms,1170 directiveTransforms,1171 onError,1172 parent: null,1173 currentNode: root,1174 childIndex: 0,1175 helper(name) {1176 context.helpers.add(name);1177 return name;1178 },1179 helperString(name) {1180 return ((context.prefixIdentifiers ? `` : `_`) +1181 helperNameMap[context.helper(name)]);1182 },1183 replaceNode(node) {1184 /* istanbul ignore if */1185 {1186 if (!context.currentNode) {1187 throw new Error(`Node being replaced is already removed.`);1188 }1189 if (!context.parent) {1190 throw new Error(`Cannot replace root node.`);1191 }1192 }1193 context.parent.children[context.childIndex] = context.currentNode = node;1194 },1195 removeNode(node) {1196 if ( !context.parent) {1197 throw new Error(`Cannot remove root node.`);1198 }1199 const list = context.parent.children;1200 const removalIndex = node1201 ? list.indexOf(node)1202 : context.currentNode1203 ? context.childIndex1204 : -1;1205 /* istanbul ignore if */1206 if ( removalIndex < 0) {1207 throw new Error(`node being removed is not a child of current parent`);1208 }1209 if (!node || node === context.currentNode) {1210 // current node removed1211 context.currentNode = null;1212 context.onNodeRemoved();1213 }1214 else {1215 // sibling node removed1216 if (context.childIndex > removalIndex) {1217 context.childIndex--;1218 context.onNodeRemoved();1219 }1220 }1221 context.parent.children.splice(removalIndex, 1);1222 },1223 onNodeRemoved: () => { },1224 addIdentifiers(exp) {1225 },1226 removeIdentifiers(exp) {1227 },1228 hoist(exp) {1229 context.hoists.push(exp);1230 return createSimpleExpression(`_hoisted_${context.hoists.length}`, false, exp.loc);1231 }1232 };1233 return context;1234}1235function transform(root, options) {1236 const context = createTransformContext(root, options);1237 traverseNode(root, context);1238 if (options.hoistStatic) {1239 hoistStatic(root, context);1240 }1241 finalizeRoot(root, context);1242}1243function finalizeRoot(root, context) {1244 const { helper } = context;1245 const { children } = root;1246 const child = children[0];1247 if (isSingleElementRoot(root, child) && child.codegenNode) {1248 // turn root element into a block1249 root.codegenNode = createBlockExpression(child.codegenNode.arguments, context);1250 }1251 else if (children.length === 1) {1252 // - single <slot/>, IfNode, ForNode: already blocks.1253 // - single text node: always patched.1254 // - transform calls without transformElement (only during tests)1255 // Just generate the node as-is1256 root.codegenNode = child;1257 }1258 else if (children.length > 1) {1259 // root has multiple nodes - return a fragment block.1260 root.codegenNode = createBlockExpression([helper(FRAGMENT), `null`, root.children], context);1261 } ...

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note-ast-transform.js

Source:note-ast-transform.js Github

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...1750 function hoistStatic(root, context) {1751 walk(root, context, new Map(), 1752 // Root node is unfortunately non-hoistable due to potential parent1753 // fallthrough attributes.1754 isSingleElementRoot(root, root.children[0]));1755 }1756 /**1757 * context.hoists: []1758 */1759 function hoist(exp) {1760 context.hoists.push(exp);1761 const identifier = createSimpleExpression(`_hoisted_${context.hoists.length}`, false, exp.loc, true);1762 identifier.hoisted = exp;1763 return identifier;1764 }1765 function isSingleElementRoot(root, child) {1766 const { children } = root;1767 return (children.length === 1 &&1768 child.type === 1 /* ELEMENT */ &&1769 !isSlotOutlet(child));1770 }1771 function walk(node, context, resultCache, doNotHoistNode = false) {1772 let hasHoistedNode = false;1773 // Some transforms, e.g. transformAssetUrls from @vue/compiler-sfc, replaces1774 // static bindings with expressions. These expressions are guaranteed to be1775 // constant so they are still eligible for hoisting, but they are only1776 // available at runtime and therefore cannot be evaluated ahead of time.1777 // This is only a concern for pre-stringification (via transformHoist by1778 // @vue/compiler-dom), but doing it here allows us to perform only one full1779 // walk of the AST and allow `stringifyStatic` to stop walking as soon as its1780 // stringficiation threshold is met.1781 let hasRuntimeConstant = false;1782 const { children } = node;1783 for (let i = 0; i < children.length; i++) {1784 const child = children[i];1785 // only plain elements & text calls are eligible for hoisting.1786 if (child.type === 1 /* ELEMENT */ &&1787 child.tagType === 0 /* ELEMENT */) {1788 let staticType;1789 if (!doNotHoistNode &&1790 (staticType = getStaticType(child, resultCache)) > 0) {1791 if (staticType === 2 /* HAS_RUNTIME_CONSTANT */) {1792 hasRuntimeConstant = true;1793 }1794 child.codegenNode.patchFlag =1795 -1 /* HOISTED */ + ( ` /* HOISTED */` );1796 child.codegenNode = context.hoist(child.codegenNode);1797 hasHoistedNode = true;1798 continue;1799 }1800 else {1801 // node may contain dynamic children, but its props may be eligible for1802 // hoisting.1803 const codegenNode = child.codegenNode;1804 if (codegenNode.type === 13 /* VNODE_CALL */) {1805 const flag = getPatchFlag(codegenNode);1806 if ((!flag ||1807 flag === 512 /* NEED_PATCH */ ||1808 flag === 1 /* TEXT */) &&1809 !hasNonHoistableProps(child)) {1810 const props = getNodeProps(child);1811 if (props) {1812 codegenNode.props = context.hoist(props);1813 }1814 }1815 }1816 }1817 }1818 else if (child.type === 12 /* TEXT_CALL */) {1819 const staticType = getStaticType(child.content, resultCache);1820 if (staticType > 0) {1821 if (staticType === 2 /* HAS_RUNTIME_CONSTANT */) {1822 hasRuntimeConstant = true;1823 }1824 child.codegenNode = context.hoist(child.codegenNode);1825 hasHoistedNode = true;1826 }1827 }1828 // walk further1829 if (child.type === 1 /* ELEMENT */) {1830 walk(child, context, resultCache);1831 }1832 else if (child.type === 11 /* FOR */) {1833 // Do not hoist v-for single child because it has to be a block1834 walk(child, context, resultCache, child.children.length === 1);1835 }1836 else if (child.type === 9 /* IF */) {1837 for (let i = 0; i < child.branches.length; i++) {1838 // Do not hoist v-if single child because it has to be a block1839 walk(child.branches[i], context, resultCache, child.branches[i].children.length === 1);1840 }1841 }1842 }1843 if (!hasRuntimeConstant && hasHoistedNode && context.transformHoist) {1844 context.transformHoist(children, context, node);1845 }1846 }1847 function createRootCodegen(root, context) {1848 const { helper } = context;1849 const { children } = root;1850 if (children.length === 1) {1851 const child = children[0];1852 // if the single child is an element, turn it into a block.1853 if (isSingleElementRoot(root, child) && child.codegenNode) {1854 // single element root is never hoisted so codegenNode will never be1855 // SimpleExpressionNode1856 const codegenNode = child.codegenNode;1857 if (codegenNode.type === 13 /* VNODE_CALL */) {1858 codegenNode.isBlock = true;1859 helper(OPEN_BLOCK);1860 helper(CREATE_BLOCK);1861 }1862 root.codegenNode = codegenNode;1863 }1864 else {1865 // - single <slot/>, IfNode, ForNode: already blocks.1866 // - single text node: always patched.1867 // root codegen falls through via genNode()...

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stable_fragment.js

Source:stable_fragment.js Github

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...128 const { children } = root;129 if (children.length === 1) {130 const child = children[0];131 // if the single child is an element, turn it into a block.132 if (isSingleElementRoot(root, child) && child.codegenNode) {133 // single element root is never hoisted so codegenNode will never be134 // SimpleExpressionNode135 const codegenNode = child.codegenNode;136 if (codegenNode.type === 13 /* VNODE_CALL */) {137 codegenNode.isBlock = true;138 helper(OPEN_BLOCK);139 helper(CREATE_BLOCK);140 }141 root.codegenNode = codegenNode;142 }143 else {144 // - single <slot/>, IfNode, ForNode: already blocks.145 // - single text node: always patched.146 // root codegen falls through via genNode()...

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transform.js

Source:transform.js Github

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...176 const { helper } = context177 const { children } = root178 if (children.length === 1) {179 const child = children[0]180 if (isSingleElementRoot(root, child) && child.codegenNode) {181 const codegenNode = child.codegenNode182 if (codegenNode.type === 13) {183 makeBlock(codegenNode, context)184 }185 root.codegenNode = codegenNode186 } else {187 root.codegenNode = child188 }189 } else if (children.length > 1) {190 let patchFlag = 64191 let patchFlagText = PatchFlagNames[64]192 if (children.filter(c => c.type !== 3).length === 1) {193 patchFlag |= 2048194 patchFlagText += `, ${PatchFlagNames[2048]}`...

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hoistStatic.js

Source:hoistStatic.js Github

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1function hoistStatic(root, context) {2 walk(root, context, new Map(),3 // Root node is unfortunately non-hoistable due to potential parent fallthrough attributes.4 isSingleElementRoot(root, root.children[0]));5}6function walk(node, context, resultCache, doNotHoistNode = false) {7 let hasHoistedNode = false8 // 是否包含运行时常量9 let hasRuntimeConstant = false10 const { children } = node11 for (let i = 0; i < children.length; i++) {12 const child = children[i]13 // 只有普通元素和文本节点才能被静态提升14 if (child.type === 1 /* ELEMENT */ &&15 child.tagType === 0 /* ELEMENT */) {16 let staticType17 if (!doNotHoistNode &&18 // 获取静态节点的类型，如果是元素，则递归检查它的子节点19 (staticType = getStaticType(child, resultCache)) > 0) {20 if (staticType === 2 /* HAS_RUNTIME_CONSTANT */) {21 hasRuntimeConstant = true22 }23 // 更新 patchFlag24 child.codegenNode.patchFlag =25 -1 /* HOISTED */ + ((process.env.NODE_ENV !== 'production') ? ` /* HOISTED */` : ``)26 // 更新节点的 codegenNode27 child.codegenNode = context.hoist(child.codegenNode)28 hasHoistedNode = true29 continue30 }31 else {32 // 节点可能会包含一些动态子节点，但它的静态属性还是可以被静态提升33 const codegenNode = child.codegenNode34 if (codegenNode.type === 13 /* VNODE_CALL */) {35 const flag = getPatchFlag(codegenNode)36 if ((!flag ||37 flag === 512 /* NEED_PATCH */ ||38 flag === 1 /* TEXT */) &&39 !hasDynamicKeyOrRef(child) &&40 !hasCachedProps()) {41 const props = getNodeProps(child)42 if (props) {43 codegenNode.props = context.hoist(props)44 }45 }46 }47 }48 }49 else if (child.type === 12 /* TEXT_CALL */) {50 // 文本节点也可以静态提升51 const staticType = getStaticType(child.content, resultCache)52 if (staticType > 0) {53 if (staticType === 2 /* HAS_RUNTIME_CONSTANT */) {54 hasRuntimeConstant = true55 }56 child.codegenNode = context.hoist(child.codegenNode)57 hasHoistedNode = true58 }59 }60 if (child.type === 1 /* ELEMENT */) {61 // 递归遍历子节点62 walk(child, context, resultCache)63 }64 else if (child.type === 11 /* FOR */) {65 walk(child, context, resultCache, child.children.length === 1)66 }67 else if (child.type === 9 /* IF */) {68 for (let i = 0; i < child.branches.length; i++) {69 walk(child.branches[i], context, resultCache, child.branches[i].children.length === 1)70 }71 }72 }73 if (!hasRuntimeConstant && hasHoistedNode && context.transformHoist) {74 // 如果编译配置了 transformHoist，则执行75 context.transformHoist(children, context, node)76 }77}78function createRootCodegen(root, context) {79 const { helper } = context;80 const { children } = root;81 const child = children[0];82 if (children.length === 1) {83 // 如果子节点是单个元素节点，则将其转换成一个 block84 if (isSingleElementRoot(root, child) && child.codegenNode) {85 const codegenNode = child.codegenNode;86 if (codegenNode.type === 13 /* VNODE_CALL */) {87 codegenNode.isBlock = true;88 helper(OPEN_BLOCK);89 helper(CREATE_BLOCK);90 }91 root.codegenNode = codegenNode;92 }93 else {94 root.codegenNode = child;95 }96 }97 else if (children.length > 1) {98 // 如果子节点是多个节点，则返回一个 fragement 的代码生成节点...

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transform.simple.js

Source:transform.simple.js Github

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...106 source: '',107 start: { line: 1, column: 1, offset: 0 },108 end: { line: 1, column: 1, offset: 0 }109}110function isSingleElementRoot( root, child ) {111 const { children } = root112 return (113 children.length === 1 &&114 child.type === NodeTypes.ELEMENT &&115 !isSlotOutlet(child)116 )117}118function isSlotOutlet( node ){119 return node.type === NodeTypes.ELEMENT && node.tagType === ElementTypes.SLOT120}121function createBlockExpression( blockExp, context ) {122 return createSequenceExpression([123 createCallExpression(context.helper(OPEN_BLOCK)),124 blockExp...

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Using AI Code Generation

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1const { isSingleElementRoot } = require('playwright/lib/server/dom.js');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 const element = await page.$('text=Get started');8 console.log(isSingleElementRoot(element));9 await browser.close();10})();11const { chromium } = require('playwright');12(async () => {13 const browser = await chromium.launch();14 const context = await browser.newContext();15 const page = await context.newPage();16 await page.waitForSelector('text=Get started');17 await browser.close();18})();19const { chromium } = require('playwright');20(async () => {21 const browser = await chromium.launch();22 const context = await browser.newContext();23 const page = await context.newPage();24 await page.waitForSelector('text=Get started', { timeout: 1000 });25 await browser.close();26})();27const { chromium } = require('playwright');28(async () => {29 const browser = await chromium.launch();30 const context = await browser.newContext();31 const page = await context.newPage();32 await page.waitForSelector('text=Get started', { timeout: 1000 });33 await page.click('text=Get started');34 await browser.close();35})();

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Using AI Code Generation

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1const { isSingleElementRoot } = require('playwright/lib/server/dom.js');2const { isSingleElementRoot } = require('playwright/lib/server/dom.js');3const element = document.querySelector("div");4console.log(isSingleElementRoot(element));5const element = document.querySelector("div");6const childElement = element.querySelector("span");7console.log(isSingleElementRoot(childElement));8#### **[🔝 back to top](#table-of-contents)**9### 4. What is the difference between page.screenshot() and page.screenshotElement()?10const { chromium } = require('playwright');11(async () => {12 const browser = await chromium.launch();13 const page = await browser.newPage();14 await page.screenshot({ path: 'fullpage.png' });15 await browser.close();16})();17const { chromium } = require('playwright');18(async () => {19 const browser = await chromium.launch();20 const page = await browser.newPage();21 const element = await page.$('text=Get Started');22 await element.screenshot({ path: 'button.png' });23 await browser.close();24})();25#### **[🔝 back to top](#table-of-contents)**26const { chromium } = require('playwright');27(async () => {28 const browser = await chromium.launch({ headless: true });29 const page = await browser.newPage();

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Using AI Code Generation

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1const { isSingleElementRoot } = require('playwright/lib/server/dom.js');2(async () => {3 const { chromium } = require('playwright');4 const browser = await chromium.launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 await page.setContent('<div><div></div></div>');8 const [div] = await page.$$('div');9 await page.setContent('<div></div><div></div>');10 const divs = await page.$$('div');11 await page.setContent('<div><div></div><div></div></div>');12 const [div2] = await page.$$('div');13 await browser.close();14})();

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Using AI Code Generation

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1const { isSingleElementRoot } = require('playwright-core/lib/server/dom.js');2const { parse } = require('playwright-core/lib/server/common/parser.js');3const { parseSelector } = require('playwright-core/lib/server/common/selectorParser.js');4const selector = 'div#target';5const root = parseSelector(selector).root;6const parsed = parse(selector);7const result = isSingleElementRoot(root, parsed);8console.log(result);9const { chromium } = require('playwright');10const { isSingleElementRoot } = require('playwright-core/lib/server/dom.js');11const { parse } = require('playwright-core/lib/server/common/parser.js');12const { parseSelector } = require('playwright-core/lib/server/common/selectorParser.js');13(async () => {14 const browser = await chromium.launch();15 const page = await browser.newPage();16 const selector = 'div#target';17 const root = parseSelector(selector).root;18 const parsed = parse(selector);19 const result = isSingleElementRoot(root, parsed);20 console.log(result);21 const element = await page.$(selector, root);22 console.log(element);23 await browser.close();24})();25const { chromium } = require('playwright');26const { isSingleElementRoot } = require('playwright-core/lib/server/dom.js');27const { parse } = require('playwright-core/lib/server/common/parser.js');28const { parseSelector } = require('playwright-core/lib/server/common/selectorParser.js');29(async () => {30 const browser = await chromium.launch();31 const page = await browser.newPage();32 const selector = 'div#target';33 const root = parseSelector(selector).root;34 const parsed = parse(selector);35 const result = isSingleElementRoot(root, parsed

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Using AI Code Generation

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1const { isSingleElementRoot } = require('playwright/lib/server/dom.js');2const { _elementHandle } = require('playwright/lib/server/dom.js');3const { _frame } = require('playwright/lib/server/dom.js');4const { _page } = require('playwright/lib/server/dom.js');5const { _context } = require('playwright/lib/server/dom.js');6const { _browser } = require('playwright/lib/server/dom.js');7const { ElementHandle } = require('playwright/lib/server/dom.js');8const { Frame } = require('playwright/lib/server/dom.js');9const { Page } = require('playwright/lib/server/dom.js');10const { BrowserContext } = require('playwright/lib/server/dom.js');11const { Browser } = require('playwright/lib/server/dom.js');12const { createJSHandle } = require('playwright/lib/server/dom.js');13const { createHandle } = require('playwright/lib/server/dom.js');14const { createHandleForElement } = require('playwright/lib/server/dom.js');15const { createHandleForFrame } = require('playwright/lib/server/dom.js');16const { createHandleForPage } = require('playwright/lib/server/dom.js');17const { createHandleForContext } = require('playwright/lib/server/dom.js');18const { createHandleForBrowser } = require('playwright/lib/server/dom.js');19const { createHandleForElementHandle } = require('playwright/lib/server/dom.js');20const { createHandleForFrameHandle } = require('playwright/lib/server/dom.js');21const { createHandleForPageHandle } = require('playwright/lib/server/dom.js');22const { createHandleForContextHandle } = require('playwright/lib/server/dom.js');23const { createHandleForBrowserHandle } = require('playwright/lib/server/dom.js');24const { createHandleForElementHandlePromise } = require('playwright/lib/server/dom.js');25const { createHandleForFrameHandlePromise } = require('playwright/lib/server/dom.js');26const { createHandleForPageHandlePromise } = require('playwright/lib/server/dom.js');27const { createHandleForContextHandlePromise } = require('playwright/lib/server/dom.js');28const { createHandleForBrowserHandlePromise } = require('playwright/lib/server/dom.js');29const { createHandleForElementHandleArray } = require('playwright/lib/server/dom.js');30const { createHandleForFrameHandleArray } = require('play

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Using AI Code Generation

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1const { chromium } = require('playwright');2(async () => {3 const browser = await chromium.launch();4 const context = await browser.newContext();5 const page = await context.newPage();6 const searchBar = await page.$('#twotabsearchtextbox');7 const isSingleElementRoot = await page.evaluate((element) => {8 return element.isSingleElementRoot;9 }, searchBar);10 console.log('Is the search bar a single element root? ', isSingleElementRoot);11 await browser.close();12})();

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Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

  1. What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
  2. How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
  3. Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
  4. What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
  5. Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
  6. Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
  7. Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
  8. Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
  9. Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
  10. Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
  11. Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
  12. Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.

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