"Could not download sourcemap from file:///..."

[roblourens]

Seen in the tsc repo. This should be detected and loaded locally.

Debugging with inspector protocol because Node.js v8.0.0 was detected.
SourceMaps.loadSourceMapContents: Could not download sourcemap from file:////Users/roblou/code/TypeScript/built/local/cancellationToken.js.map
SourceMaps.loadSourceMapContents: Could not download sourcemap from file:////Users/roblou/code/TypeScript/built/local/typescriptServices.js.map
SourceMaps.loadSourceMapContents: Could not download sourcemap from file:////Users/roblou/code/TypeScript/built/local/tsserver.js.map
SourceMaps.loadSourceMapContents: Could not download sourcemap from file:////Users/roblou/code/TypeScript/built/local/watchGuard.js.map
SourceMaps.loadSourceMapContents: Could not download sourcemap from file:////Users/roblou/code/TypeScript/built/local/tsserverlibrary.js.map
SourceMaps.loadSourceMapContents: Could not download sourcemap from file:////Users/roblou/code/TypeScript/built/local/typingsInstaller.js.map
SourceMaps.loadSourceMapContents: Could not download sourcemap from file:////Users/roblou/code/TypeScript/built/local/typescriptServices.js.map