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as ts.NamedImports).elements.filter(\n isMetaReducersImportSpecifier\n )\n )\n .reduce((imports, curr) => imports.concat(curr), []);\n\n const changes = metaReducerImports.map(createChange);\n if (!canRunSchematics && changes.length === 0) {\n logger.info(tags.stripIndent`\n NgRx 8 Migration: Unable to run the schematics to rename \\`META_REDUCERS\\` to \\`USER_PROVIDED_META_REDUCERS\\`\n in file '${sourceFile.fileName}'.\n\n For more info see https://ngrx.io/guide/migration/v8#meta_reducers-token.\n `);\n }\n\n return changes;\n\n function isNgRxStoreImport(importDeclaration: ts.ImportDeclaration) {\n return (\n importDeclaration.moduleSpecifier.getText(sourceFile) === \"'@ngrx/store'\"\n );\n }\n\n function isMetaReducersImportSpecifier(importSpecifier: ts.ImportSpecifier) {\n const isImport = () => importSpecifier.name.text === META_REDUCERS;\n const isRenamedImport = () =>\n importSpecifier.propertyName &&\n importSpecifier.propertyName.text === META_REDUCERS;\n\n return (\n ts.isImportSpecifier(importSpecifier) && (isImport() || isRenamedImport())\n );\n }\n}\n\nfunction findMetaReducersAssignment(\n sourceFile: ts.SourceFile,\n createChange: (node: ts.Node) => ReplaceChange\n) {\n const changes: ReplaceChange[] = [];\n ts.forEachChild(sourceFile, (node) => findMetaReducers(node, changes));\n return changes;\n\n function findMetaReducers(node: ts.Node, changes: ReplaceChange[]) {\n if (\n ts.isPropertyAssignment(node) &&\n node.initializer.getText(sourceFile) === META_REDUCERS\n ) {\n changes.push(createChange(node.initializer));\n }\n\n ts.forEachChild(node, (childNode) => findMetaReducers(childNode, changes));\n }\n}\n"]} |