• ts-call-graph
• prerequisite
• example image
• install
• How to generate call graph

ts-call-graph

Automatically generate graphs from source code written in TypeScript/JavaScript using TypeScript language service and its AST.

Sample images are in example directory.

prerequisite

You'll need either dot command to generate call graph, which converts .dot file to particular files like .svg, .png and whatnot, or modern web browser which enables to use hpcc-js-wasm.

If you specify server parameter true or nothing, then you'll use a web browser to generate call graphs in SVG format.
If specified server parameter with false, then you'll use dot command, which is supposed to be installed in advance.
See the server parameter details shown below.

example image

When executing below command, the following image will be output.

ts-call-graph test/ -d true -f png

And other example output images of well-known libraries are under example folders.

• nest
• react-dom
• ts-node

color meaning

• background color

  • standard library which is under node_modules/@types/node and node_modules/typescript/lib

    #adedad

  • other packages under node_modules

    #e6ecfa

• stroke

  • When a node doesn't have children, even if it has originally holds. For example, when interactive mode, it might remove its children, for sure can be added again.

    #3b82f6

install

npm

npm install ts-call-graph --save-dev
yarn add --dev ts-call-graph

How to generate call graph

• example

ts-call-graph ./path/to/entry-file.ts -f svg

• available options

Options:
      --version      Show version number                               [boolean]
  -r, --rootDir      root directory where we'll recursively walk through source
                     files. Default directory is current working directory.
                                                              [string] [default:
                                                          "current working directory"]
  -o, --outDir       output directory                         [string] [default:
                                                   "current working directory/output"]
      --tsconfig     path to tsconfig.json which is TypeScript transpile config
                                                                        [string]
  -f, --format       out put format
      [string] [choices: "jpg", "jpeg", "jpe", "jp2", "pdf", "png", "ps", "ps2",
                           "psd", "sgi", "svg", "svgz", "webp"] [default: "svg"]
  -d, --declaration  is include declaration           [boolean] [default: false]
  -v, --verbose      Use verbose output               [boolean] [default: false]
  -l, --line         The line number where call graph starts            [number]
      --server       Whether you use server to render call graphs or dot
                     command.                          [boolean] [default: true]
      --help         Show help                                         [boolean]

• ./path/to/entry-file.ts First command line arg, as in entry file or directory where we'll walk through to generate call graph. If this is a directory, We'll all files in the directory, and if a file, just output the only call graphs about the file.

• rootDir When we output graphviz, this directory will be the base directory. Default value is current working directory. <rootDir>/path/to/entry-file.ts

  example) rootDir parameter will remove the output files' directory names.

~ $ pwd
/Users/xxxx
~ $ ls
test     package.json
~ $ ls test/call-hierarchy
one.ts          three.ts        two.ts
~ $ npm run ts-call-graph ./test/call-hierarchy/
~ $ ls output/test/call-hierarchy/
one.ts#callThreeTwice:4.dot     three.ts#log:8.svg              two.ts#tada:7.dot               two.ts#tada:8.svg
one.ts#callThreeTwice:4.svg     three.ts#print:4.dot            two.ts#tada:7.svg
three.ts#log:8.dot              three.ts#print:4.svg            two.ts#tada:8.do