ts.createSourceFile trims leading newlines, causing stored line numbers to mismatch about typescript HOT 5 CLOSED

TS obviously preserves the line information enough to e.g. give you correct line numbers on the commandline when showing errors. Can you clarify which API you're calling and how?

from typescript.

Not sure this is a meaningful test, reproducing what is shown in a larger case is always difficult. I will dig more into this tomorrow and ensure the problem is not elsewhere. Anyway, given a.ts

const ts = require("typescript");
const { readFileSync } = require("fs");

const sourceText = readFileSync("a.ts", {encoding: 'utf-8'});
const sourceFile = ts.createSourceFile('test.tsx', sourceText, ts.ScriptTarget.Latest, true);
console.log(sourceFile.getText());

and package.json

{
  "name": "tstest",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "typescript": "^5.4.5"
  }
}

then running

node_modules/.bin/tsc a.ts && node a

outputs

const ts = require("typescript");
const { readFileSync } = require("fs");

const sourceText = readFileSync("a.ts", {encoding: 'utf-8'});
const sourceFile = ts.createSourceFile('test.tsx', sourceText, ts.ScriptTarget.Latest, true);
console.log(sourceFile.getText());

which includes trailing newlines but not leading ones.

from typescript.

Use getFullText() for that operation

from typescript.

Ok, so now that I am aware of getFullText() I am guessing that the main problem is the use of getStart() and getEnd() instead of getFullStart() and getFullWidth() in our code. Where should I have been able to find out about full vs non-full versions of the methods?

from typescript.

This issue has been marked as "Question" and has seen no recent activity. It has been automatically closed for house-keeping purposes.

from typescript.