ErrLookup › facebook/flow
facebook/flow
Adds static typing to JavaScript to improve developer productivity and code quality. · Rust · 1,888 source files
Analyzed at d1341dac89 on 2026-08-17. 49 documented errors.
| Code / Message | Type | Severity | Tags |
|---|---|---|---|
| Unexpected function parameter ${param.type} | exception | error | typescript, flow, dts, ast, transformation |
| updatePendingStatements: Variable for dependency "${dep}" no | exception | error | flow, ast, transformation, internal-invariant, scope |
| updatePendingStatements: Variable parent of "${dep}" not fou | exception | error | flow, ast, transformation, internal-invariant, scope |
| Flow check failed! | exception | error | flow, cli, process-exit, dev-tools, spawn |
| ImportDeclaration should appear when the mode is ES6 and in | exception | error | eslint, scope-analysis, parser-options, esm, import |
| Flow version ${version} doesn't support 'flow lsp'. Please u | exception | error | flow, vscode, lsp, version, extension |
| Unsupported .flowconfig option `log.file`. The VS Code exten | exception | error | flow, flowconfig, vscode, config, logging |
| Failed to find extensionPath | exception | error | vscode, extension, testing, mock |
| Flow not found | exception | error | flow, vscode, binary, path, resolution |
| Pkg flow-bin not found in ${dirsToCheck.join(', ')} | exception | error | flow-bin, npm, vscode, dependency-missing |
| '${command}' not found | exception | error | flow, vscode, path, which, command |
| Failed to determine correct binary for platform ${process.pl | exception | error | flow-bin, platform, arch, unsupported |
| Failed to find anything starting with ${dirPrefix} in ${flow | exception | error | flow-bin, npm, install-corruption, filesystem |
| Failed to verify SHASUM256.txt against public key | exception | warning | flow-bin, signature, sha256, security, verification |
| Failed to find SHASUM256.txt line containing ${flowBinRelati | exception | error | flow-bin, shasum, checksum, verification |
| Hash of ${flowBinPath} does not match hash from SHASUM256.tx | exception | critical | flow-bin, checksum, sha256, tampering, security |
| flow option must be "all" or "detect" | validation | error | flow-parser, options, validation |
| sourceType option must be "script", "module", or "unambiguou | validation | error | flow-parser, options, source-type, validation |
| Parser out of memory | exception | error | flow-parser, wasm, memory, large-files |
| SimpleTransform: invalid array result for root node | exception | error | ast, transform, visitor, flow-parser |
| SimpleTransform.transformProgram: Expected program node. | exception | error | ast, transform, program-node, flow-parser |
| Invalid Mutation: Tried to mutate an elements array with an | validation | error | ast, mutation, array, index-out-of-bounds |
| Expected parent node to be set on "${target.type}" | exception | error | ast, parent-pointer, mutation, flow-parser |
| Expected to find the ${target.type} as a direct child of the | exception | error | ast, parent-pointer, invariant, flow-parser |
| Cannot insert array into non-array parent type: ${parent.typ | exception | error | ast, replacement, type-mismatch, flow-parser |
| No visitor keys found for node type "${node.type}". | exception | error | ast, traverse, visitor-keys, node-type, flow-parser |
| flow-remove-types: the "checkPragma" option has been replace | validation | error | options, migration, flow-remove-types, deprecated-api |
| flow-remove-types: includes and excludes must be RegExp or p | validation | error | config, validation, regexp, flow-remove-types |
| Attempted to mutate a `${node.type}.${key}` on a deleted nod | exception | error | flow-transform, mutation, lifecycle, deleted-node |
| Attempted to mutate a `${node.type}.${key}` when it has alre | exception | error | flow-transform, mutation, duplicate-write |
| import/export cannot be inserted into a ${insertionParent.pa | exception | error | flow-transform, import, insertion, module-scope |
| Tried to remove ${node.type} from parent of type ${node.pare | exception | error | flow-transform, removal, identifier, parent-type |
| Tried to remove ${node.type} from parent of type ${node.pare | exception | error | flow-transform, removal, rest-element, parent-type |
| Tried to remove ${node.type} from parent of type ${node.pare | exception | error | flow-transform, removal, spread-element, parent-type |
| Cannot perform a remove mutation on node of type ${node.type | exception | error | flow-transform, removal, unsupported-node |
| Could not find target in array of `${node.parent.type}.${key | exception | error | flow-transform, removal, stale-pointer, invariant |
| Expected to find the ${target.type} as a direct child of the | exception | error | flow-transform, replacement, stale-pointer, invariant |
| import/export cannot be replaced into a ${replacementParent. | exception | error | flow-transform, replacement, import, module-scope |
| Attempted to insert a statement into `${parentWithType.type} | exception | error | flow-transform, ast, codemod, mutation, invalid-argument |
| Could not find target in array of `${parent.type}.${key}`. | exception | error | flow-transform, ast, codemod, stale-reference, mutation |
| Expected to find a valid statement parent, but found a paren | exception | error | flow-transform, ast, codemod, unsupported-parent, mutation |
| Expected to find the target "${target.type}" on the "${resul | exception | error | flow-transform, ast, codemod, stale-reference, mutation |
| No visitor keys found for node type "${node.type}". | exception | error | flow-transform, traverse, esquery, visitor-keys, version-mismatch |
| Unexpected selector ${parsedSelector.value} | exception | error | flow-transform, traverse, selector, visitor-keys, typo |
| Syntax error in selector "${rawSelector}" at position ${err. | exception | error | flow-transform, esquery, selector, syntax-error, traverse |
| flow-dot-js wasm requires crypto.getRandomValues | exception | error | wasm, flow, crypto, environment, polyfill |
| flow.js wasm export ${name} is unavailable | exception | error | wasm, flow, build, version-mismatch, emscripten |
| flow.js wasm is still loading; await flow.ready first. | exception | error | wasm, flow, async, initialization, race-condition |
| Usage: flow_dot_js_wasm_packager.js <raw-js> <output-js> <po | exception | error | cli, build, packager, usage, arguments |