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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 | 1x 1x 1x 1x 1x 1x 1x 32x 32x 32x 32x 1x 31x 1x 1x 30x 30x 41x 41x 41x 41x 41x 41x 4x 4x 4x 4x 41x 30x 46x 44x 44x 1x 1x 1x 1x 1x 44x 20x 20x 20x 44x 21x 23x 2x 2x 2x 2x 2x 46x 2x 2x 2x 2x 46x 27x 1x 27x 27x 27x 27x 27x 27x 27x 27x 27x 27x 27x 41x 41x 41x 41x 27x 9x 9x 27x 9x 9x 9x 27x 16x 16x 16x 16x 16x 27x 35x 52x 33x 33x 19x 18x 19x 1x 1x 1x 18x 18x 18x 18x 18x 18x 52x 35x 27x 33x 33x 39x 39x 39x 56x 43x 55x 13x 13x 56x 39x 33x 27x 8x 8x 6x 8x 2x 2x 8x 8x 6x 6x 6x 6x 6x 6x 8x 27x 1086x 6x 6x 4x 4x 4x 4x 4x 4x 6x 1086x 27x 27x 27x 27x 549x 549x 549x 522x 5x 5x 5x 549x 5x 5x 544x 544x 549x 9x 9x 9x 8x 8x 9x 9x 549x 549x 549x 173x 173x 98x 173x 55x 8x 8x 55x 173x 549x 27x 524x 524x 524x 524x 524x 9x 9x 524x 27x 27x | import type { BlockStatement, Expression, Identifier, Node, ObjectPattern, Program, VariableDeclaration, } from '@babel/types' import { walk } from 'estree-walker' import { BindingTypes, extractIdentifiers, isFunctionType, isInDestructureAssignment, isReferencedIdentifier, isStaticProperty, unwrapTSNode, walkFunctionParams, } from '@vue/compiler-dom' import { genPropsAccessExp } from '@vue/shared' import { isCallOf, resolveObjectKey } from './utils' import type { ScriptCompileContext } from './context' import { DEFINE_PROPS } from './defineProps' export function processPropsDestructure( ctx: ScriptCompileContext, declId: ObjectPattern, ): void { if (ctx.options.propsDestructure === 'error') { ctx.error(`Props destructure is explicitly prohibited via config.`, declId) } else if (ctx.options.propsDestructure === false) { return } ctx.propsDestructureDecl = declId const registerBinding = ( key: string, local: string, defaultValue?: Expression, ) => { ctx.propsDestructuredBindings[key] = { local, default: defaultValue } if (local !== key) { ctx.bindingMetadata[local] = BindingTypes.PROPS_ALIASED ;(ctx.bindingMetadata.__propsAliases || (ctx.bindingMetadata.__propsAliases = {}))[local] = key } } for (const prop of declId.properties) { if (prop.type === 'ObjectProperty') { const propKey = resolveObjectKey(prop.key, prop.computed) if (!propKey) { ctx.error( `${DEFINE_PROPS}() destructure cannot use computed key.`, prop.key, ) } if (prop.value.type === 'AssignmentPattern') { // default value { foo = 123 } const { left, right } = prop.value if (left.type !== 'Identifier') { ctx.error( `${DEFINE_PROPS}() destructure does not support nested patterns.`, left, ) } registerBinding(propKey, left.name, right) } else if (prop.value.type === 'Identifier') { // simple destructure registerBinding(propKey, prop.value.name) } else { ctx.error( `${DEFINE_PROPS}() destructure does not support nested patterns.`, prop.value, ) } } else { // rest spread ctx.propsDestructureRestId = (prop.argument as Identifier).name // register binding ctx.bindingMetadata[ctx.propsDestructureRestId] = BindingTypes.SETUP_REACTIVE_CONST } } } /** * true -> prop binding * false -> local binding */ type Scope = Record<string, boolean> export function transformDestructuredProps( ctx: ScriptCompileContext, vueImportAliases: Record<string, string>, ): void { if (ctx.options.propsDestructure === false) { return } const rootScope: Scope = Object.create(null) const scopeStack: Scope[] = [rootScope] let currentScope: Scope = rootScope const excludedIds = new WeakSet<Identifier>() const parentStack: Node[] = [] const propsLocalToPublicMap: Record<string, string> = Object.create(null) for (const key in ctx.propsDestructuredBindings) { const { local } = ctx.propsDestructuredBindings[key] rootScope[local] = true propsLocalToPublicMap[local] = key } function pushScope() { scopeStack.push((currentScope = Object.create(currentScope))) } function popScope() { scopeStack.pop() currentScope = scopeStack[scopeStack.length - 1] || null } function registerLocalBinding(id: Identifier) { excludedIds.add(id) if (currentScope) { currentScope[id.name] = false } else { ctx.error( 'registerBinding called without active scope, something is wrong.', id, ) } } function walkScope(node: Program | BlockStatement, isRoot = false) { for (const stmt of node.body) { if (stmt.type === 'VariableDeclaration') { walkVariableDeclaration(stmt, isRoot) } else if ( stmt.type === 'FunctionDeclaration' || stmt.type === 'ClassDeclaration' ) { if (stmt.declare || !stmt.id) continue registerLocalBinding(stmt.id) } else if ( (stmt.type === 'ForOfStatement' || stmt.type === 'ForInStatement') && stmt.left.type === 'VariableDeclaration' ) { walkVariableDeclaration(stmt.left) } else if ( stmt.type === 'ExportNamedDeclaration' && stmt.declaration && stmt.declaration.type === 'VariableDeclaration' ) { walkVariableDeclaration(stmt.declaration, isRoot) } else if ( stmt.type === 'LabeledStatement' && stmt.body.type === 'VariableDeclaration' ) { walkVariableDeclaration(stmt.body, isRoot) } } } function walkVariableDeclaration(stmt: VariableDeclaration, isRoot = false) { if (stmt.declare) { return } for (const decl of stmt.declarations) { const isDefineProps = isRoot && decl.init && isCallOf(unwrapTSNode(decl.init), 'defineProps') for (const id of extractIdentifiers(decl.id)) { if (isDefineProps) { // for defineProps destructure, only exclude them since they // are already passed in as knownProps excludedIds.add(id) } else { registerLocalBinding(id) } } } } function rewriteId(id: Identifier, parent: Node, parentStack: Node[]) { if ( (parent.type === 'AssignmentExpression' && id === parent.left) || parent.type === 'UpdateExpression' ) { ctx.error(`Cannot assign to destructured props as they are readonly.`, id) } if (isStaticProperty(parent) && parent.shorthand) { // let binding used in a property shorthand // skip for destructure patterns if ( !(parent as any).inPattern || isInDestructureAssignment(parent, parentStack) ) { // { prop } -> { prop: __props.prop } ctx.s.appendLeft( id.end! + ctx.startOffset!, `: ${genPropsAccessExp(propsLocalToPublicMap[id.name])}`, ) } } else { // x --> __props.x ctx.s.overwrite( id.start! + ctx.startOffset!, id.end! + ctx.startOffset!, genPropsAccessExp(propsLocalToPublicMap[id.name]), ) } } function checkUsage(node: Node, method: string, alias = method) { if (isCallOf(node, alias)) { const arg = unwrapTSNode(node.arguments[0]) if (arg.type === 'Identifier' && currentScope[arg.name]) { ctx.error( `"${arg.name}" is a destructured prop and should not be passed directly to ${method}(). ` + `Pass a getter () => ${arg.name} instead.`, arg, ) } } } // check root scope first const ast = ctx.scriptSetupAst! walkScope(ast, true) walk(ast, { enter(node: Node, parent: Node | null) { parent && parentStack.push(parent) // skip type nodes if ( parent && parent.type.startsWith('TS') && parent.type !== 'TSAsExpression' && parent.type !== 'TSNonNullExpression' && parent.type !== 'TSTypeAssertion' ) { return this.skip() } checkUsage(node, 'watch', vueImportAliases.watch) checkUsage(node, 'toRef', vueImportAliases.toRef) // function scopes if (isFunctionType(node)) { pushScope() walkFunctionParams(node, registerLocalBinding) if (node.body.type === 'BlockStatement') { walkScope(node.body) } return } // catch param if (node.type === 'CatchClause') { pushScope() if (node.param && node.param.type === 'Identifier') { registerLocalBinding(node.param) } walkScope(node.body) return } // non-function block scopes if (node.type === 'BlockStatement' && !isFunctionType(parent!)) { pushScope() walkScope(node) return } if (node.type === 'Identifier') { if ( isReferencedIdentifier(node, parent!, parentStack) && !excludedIds.has(node) ) { if (currentScope[node.name]) { rewriteId(node, parent!, parentStack) } } } }, leave(node: Node, parent: Node | null) { parent && parentStack.pop() if ( (node.type === 'BlockStatement' && !isFunctionType(parent!)) || isFunctionType(node) ) { popScope() } }, }) } |