template-extractor

Extract templates from TypeScript.

Usage

import fs from "fs";
import { extractSourceFile } from "template-extractor";

extractSourceFile(fs.readFileSync("input.ts", "utf-8"));

import ts from "typescript";
import { extract } from "template-extractor";

extract(ts.createSourceFile("input.ts", src, ts.ScriptTarget.Latest, true));

Example

Input

`
Template 
${`Template Span`}
`;

tagged`
Tagged Template
${`Template Span`}
`;

Output (to JSON)

[
  {
    "type": "TemplateExpression",
    "kind": 228,
    "text": "`\nTemplate \n${`Template Span`}\n`",
    "start": 0,
    "end": 32,
    "children": [
      {
        "type": "TemplateSpan",
        "kind": 239,
        "text": "`Template Span`",
        "start": 14,
        "end": 29,
        "children": []
      }
    ],
    "template": {
      "start": 0,
      "end": 32,
      "text": "`\nTemplate \n${`Template Span`}\n`"
    },
    "strings": [
      "\nTemplate \n",
      "\n"
    ],
    "values": [
      "`Template Span`"
    ]
  },
  {
    "type": "TaggedTemplateExpression",
    "kind": 215,
    "text": "tagged`\nTagged Template\n${`Template Span`}\n`",
    "start": 35,
    "end": 79,
    "children": [
      {
        "type": "TemplateSpan",
        "kind": 239,
        "text": "`Template Span`",
        "start": 61,
        "end": 76,
        "children": []
      }
    ],
    "tag": {
      "start": 35,
      "end": 41,
      "text": "tagged"
    },
    "template": {
      "start": 41,
      "end": 79,
      "text": "`\nTagged Template\n${`Template Span`}\n`"
    },
    "strings": [
      "\nTagged Template\n",
      "\n"
    ],
    "values": [
      "`Template Span`"
    ]
  }
]

[
  {
    "tag": "",
    "type": "TemplateExpression",
    "kind": 228,
    "text": "`\nTemplate \n${`Template Span`}\n`",
    "start": 0,
    "end": 32,
    "children": [
      {
        "type": "TemplateSpan",
        "kind": 239,
        "text": "`Template Span`",
        "start": 14,
        "end": 29
      }
    ]
  },
  {
    "tag": "tagged",
    "type": "TaggedTemplateExpression",
    "kind": 228,
    "text": "`\nTagged Template\n${`Template Span`}\n`",
    "start": 41,
    "end": 79,
    "children": [
      {
        "type": "TemplateSpan",
        "kind": 239,
        "text": "`Template Span`",
        "start": 61,
        "end": 76
      }
    ]
  }
]