[Query] Dataflow Lens

Generated from 'wiki-query.ts' on 2026-11-08, 08:41:45 UTC (v2.17.4), do not edit directly.

Returns a simplified view on the dataflow graph, reduced to definitions, uses, and calls.
This query is requested with the type dataflow-lens.

The Dataflow Query hands you the complete dataflow graph, which is precise but quickly grows too large to read. The dataflow lens returns a reduced view of that same graph, keeping only what is usually interesting when looking at it by hand:

• only vertices tagged as a use, a variable definition, a function definition, or a function call (value vertices are dropped),
• without the environment captured at each vertex (control dependencies are kept),
• and without the vertices for plain operators and keywords (<-, =, +, |>, if, function, ...).

Edges survive only if both of their endpoints do. The query takes no further arguments.

f <- function(a) a + 1
x <- 1
y <- f(x)
print(y)

[ { "type": "dataflow-lens" } ]

(This can be shortened to @dataflow-lens when used with the REPL command :query).

Results (prettified and summarized):

Query: dataflow-lens (18 ms)
   ╰ Simplified Graph

{"dataflow-lens":{".meta":{},"simplifiedGraph":{"rootVertices":[0,9,14,16,12,19,21],"vertexInformation":[[0,{"tag":"vdef","id":0,"source":[7]}],[9,{"tag":"vdef","id":9,"source":[10]}],[14,{"tag":"use","id":14,"cds":[{"id":16,"when":true,"byPromise":true}]}],[16,{"tag":"fcall","id":16,"environment":{"current":{"id":1947,"parent":"<BuiltInEnvironment>","memory":[],"globalEnv":true},"level":0},"name":"f","onlyBuiltin":false,"args":[{"nodeId":14,"type":32}],"origin":["function"]}],[12,{"tag":"vdef","id":12,"source":[16]}],[19,{"tag":"use","id":19}],[21,{"tag":"fcall","id":21,"name":"print","onlyBuiltin":true,"args":[{"nodeId":19,"type":32}],"origin":["builtin:d"]}]],"edgeInformation":[[14,[[9,{"types":1}],[16,{"types":4096}]]],[16,[[14,{"types":65}],[0,{"types":1}],[12,{"types":4096}]]],[12,[[16,{"types":2}]]],[21,[[19,{"types":73}]]],[19,[[12,{"types":1}],[21,{"types":4096}]]]],"_unknownSideEffects":[]}},".meta":{}}