@swc/register fails with "Source map must be true, false or inline"

[ecraig12345]

Describe the bug

When I try to use @swc/register on TypeScript code, even extremely simple code, it fails with the error:

/<project>/node_modules/@swc/core/index.js:121
        return super.transformSync(isModule ? JSON.stringify(src) : src, isModule, options);
                     ^

Error: internal error in Neon module: assertion failed: `(left == right)`
  left: `"both"`,
 right: `"inline"`: Source map must be true, false or inline
    at Compiler.transformSync (/<project>/node_modules/@swc/core/index.js:121:22)
    at Object.transformSync (/<project>/node_modules/@swc/core/index.js:189:21)
    at compile (/<project>/node_modules/@swc/register/lib/node.js:63:22)
    at compileHook (/<project>/node_modules/@swc/register/lib/node.js:78:16)
    at Module._compile (/<project>/node_modules/pirates/lib/index.js:93:29)
    at Module._extensions..js (internal/modules/cjs/loader.js:700:10)
    at Object.newLoader [as .ts] (/<project>/node_modules/pirates/lib/index.js:104:7)
    at Module.load (internal/modules/cjs/loader.js:599:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
    at Function.Module._load (internal/modules/cjs/loader.js:530:3)

With some other config variants (besides the one shown below), I get a different error:

/<project>/node_modules/@swc/core/index.js:121
        return super.transformSync(isModule ? JSON.stringify(src) : src, isModule, options);
                     ^

Error: failed to process config file
    at Compiler.transformSync (/<project>/node_modules/@swc/core/index.js:121:22)
    at Object.transformSync (/<project>/node_modules/@swc/core/index.js:189:21)
    at compile (/<project>/node_modules/@swc/register/lib/node.js:63:22)
    at compileHook (/<project>/node_modules/@swc/register/lib/node.js:78:16)
    at Module._compile (/<project>/node_modules/pirates/lib/index.js:93:29)
    at Module._extensions..js (internal/modules/cjs/loader.js:700:10)
    at Object.newLoader [as .js] (/<project>/node_modules/pirates/lib/index.js:104:7)
    at Module.load (internal/modules/cjs/loader.js:599:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
    at Function.Module._load (internal/modules/cjs/loader.js:530:3)

(Filed here instead of https://github.com/swc-project/register because it seems like issue tracking is centralized to this main repo right now?)

Input code
file.ts (similar errors if config is modified for JS code):

console.log('hi');

Run in console:

node -r '@swc/register' file.ts

Config
This was based on the samples in the documentation.

{
  "test": ".*.ts$",
  "module": {
    "type": "commonjs"
  }
}

Also happens if I add some jsc settings:

{
  "test": ".*.ts$",
  "module": {
    "type": "commonjs"
  },
  "jsc": {
    "parser": {
      "syntax": "typescript"
    }
  }
}

Expected behavior
The code is compiled and runs.

Version
@swc/core: 1.1.39
@swc/register: 0.1.6
Node 10.15.1
Mac OS 10.15.3

[kdy1]

Fixed with @swc/register v0.1.7

[swc-bot]

This closed issue has been automatically locked because it had no new activity for a month. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.