Uncaught TypeError: Cannot read property 'substring' of undefined

[dead-claudia]

[Enter steps to reproduce:]

1. Open up a new, unsaved file in an active, non-empty repo (it need not be persisted)
2. Type in const foo = require("../mod")
3. Start to change foo to {bar}

Atom: 1.32.2 x64 Electron: 2.0.9 OS: Mac OS X 10.13.6 Thrown From: autocomplete-modules package 2.2.5

Stack Trace

Uncaught TypeError: Cannot read property 'substring' of undefined

At /Users/isiahmeadows/.atom/packages/autocomplete-modules/lib/lookups/export/local.js:17

TypeError: Cannot read property 'substring' of undefined
    at LocalLookup.getList (/packages/autocomplete-modules/lib/lookups/export/local.js:17:27)
    at relevantLookups.reduce (/packages/autocomplete-modules/lib/lookups/index.js:25:16)
    at Array.reduce (<anonymous>)
    at LookupApi.filterList (/packages/autocomplete-modules/lib/lookups/index.js:23:28)
    at CompletionProvider.getSuggestions (/packages/autocomplete-modules/lib/completion-provider.js:64:34)
    at n.forEach.t (/Applications/Atom.app/Contents/Resources/app/static/<embedded>:11:644623)
    at Array.forEach (<anonymous>)
    at AutocompleteManager.getSuggestionsFromProviders (/Applications/Atom.app/Contents/Resources/app/static/<embedded>:11:644139)
    at AutocompleteManager.findSuggestions (/Applications/Atom.app/Contents/Resources/app/static/<embedded>:11:643877)
    at AutocompleteManager.requestNewSuggestions (/Applications/Atom.app/Contents/Resources/app/static/<embedded>:11:652407)
    at AutocompleteManager.showOrHideSuggestionListForBufferChanges (/Applications/Atom.app/Contents/Resources/app/static/<embedded>:11:653498)
    at Function.simpleDispatch (/Applications/Atom.app/Contents/Resources/app/static/<embedded>:11:1186984)
    at Emitter.emit (/Applications/Atom.app/Contents/Resources/app/static/<embedded>:11:1188425)
    at TextBuffer.emitDidChangeTextEvent (/Applications/Atom.app/Contents/Resources/app/static/<embedded>:11:501342)
    at TextBuffer.transact (/Applications/Atom.app/Contents/Resources/app/static/<embedded>:11:489600)
    at TextEditor.transact (/Applications/Atom.app/Contents/Resources/app/static/<embedded>:11:24215)
    at mergeIntersectingSelections (/Applications/Atom.app/Contents/Resources/app/static/<embedded>:11:16150)
    at TextEditor.mergeSelections (/Applications/Atom.app/Contents/Resources/app/static/<embedded>:11:39529)
    at TextEditor.mergeIntersectingSelections (/Applications/Atom.app/Contents/Resources/app/static/<embedded>:11:39038)
    at TextEditor.mutateSelectedText (/Applications/Atom.app/Contents/Resources/app/static/<embedded>:11:16113)
    at TextEditor.insertText (/Applications/Atom.app/Contents/Resources/app/static/<embedded>:11:15662)
    at TextEditor.e.(anonymous function) [as insertText] (/Applications/Atom.app/Contents/Resources/app/static/<embedded>:11:256932)
    at TextEditorComponent.didTextInput (/Applications/Atom.app/Contents/Resources/app/static/<embedded>:11:93579)

Commands

     -0:17.5.0 core:close (atom-pane.pane)
     -0:14.1.0 find-and-replace:select-next (input.hidden-input)
  2x -0:07.3.0 core:undo (input.hidden-input)

Non-Core Packages

atom-beautify 0.33.4 
atom-typescript 12.6.3 
auto-detect-indentation 1.3.0 
autocomplete-modules 2.2.5 
autocomplete-paths 2.12.2 
autocomplete-racer 0.1.3 
build 0.70.0 
build-cargo 2.0.0 
busy-signal 1.4.3 
color-picker 2.3.0 
docblockr 0.13.7 
emmet 2.4.3 
eval-javascript 1.2.0 
figlet 0.5.4 
file-icons 2.1.26 
git-plus 8.1.0 
intentions 1.1.5 
language-babel 2.85.0 
language-batch 0.4.0 
language-haskell 1.17.8 
language-kotlin 0.5.0 
language-livescript 0.0.3 
language-ocaml 1.9.5 
language-pegjs 0.5.0 
language-pug 0.0.22 
language-rust 0.4.12 
language-scala 1.1.9 
language-stylus 0.2.0 
language-webassembly 1.0.1 
language-x86-64-assembly 2.2.11 
linter 2.2.0 
linter-eslint 8.4.1 
linter-tslint 1.9.1 
linter-ui-default 1.7.1 
minimap 4.29.9 
minimap-cursorline 0.2.0 
minimap-git-diff 4.3.1 
minimap-linter 2.2.1 
prettier-atom 0.55.2 
project-manager 3.3.6 
sort-lines 0.18.0 
sync-settings 0.8.6 

[jonyeezs]

Hi. You mentioned it's an unsaved file. Atom can't infer where the relative path is from the file as it's still in memory and not in an exact location.

What should be considered is a safe way for it to have its exception caught.

[dead-claudia]

I get that. It still should at least tolerate an in-memory file, though.

IMHO, I feel it should just not attempt to resolve non-native modules (or at least non-global modules) if it hasn't been saved yet. fs is okay, but it shouldn't offer completions for ../lib/foo, for example. You could go either way with something like lodash, however.

[jonyeezs]

yes. I agree. Will need to manage that.

On Tue., 13 Nov. 2018, 11:11 am Isiah Meadows, [email protected] wrote:

I get that. It still should at least tolerate an in-memory file, though.

IMHO, I feel it should just not attempt to resolve non-native modules (or at least non-global modules) if it hasn't been saved yet. fs is okay, but it shouldn't offer completions for ../lib/foo, for example. You could go either way with something like lodash, however.

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