Converting typescript path aliases into local file paths

Just dipping my toes into typescript and grappling with module resolution. The problem seems straightforward (or so I think), but there's something off about my tsconfig.json.

If my folder structure looks like this:

+ release
    + definitions
    + js
        > a.js
        > main.js
+ src
    > main.ts
    > a.ts

Using gulp for incremental compilation, following the example in gulp documentation.

Here's how my tsconfig.json is set up:

{
    "compilerOptions": {
        "module": "commonjs",
        "target": "es6",
        "noImplicitAny": true,
        "moduleResolution": "node",
        "sourceMap": true,
        "outDir": "dist",
        "baseUrl": ".",
        "paths": {
           "src/*": [
               "./src/*"
           ]
        }
    },
    "files": [
        "src/main.ts"
    ],
    "include": [
        "src/**/*"
    ],
    "exclude": [
        "node_modules",
        "**/*.spec.ts"
    ]
}

I'm trying to create aliases for the src directory as src/module_name, so that import resolutions work smoothly, like in import foo from 'src/la/ja'. The aim is to avoid convoluted paths like

import bar from '../../../utils/bar'
by simply using from 'src/utils/bar'.

In my main.ts, I have:

import { a } from 'src/a'

I expect the compiler to pick up on the correct relative path. However, despite the seemingly correct definitions and absence of linting errors with my current tsconfig.json, the compiled output ends up as:

const a_1 = require("src/a");

Instead of:

const a_1 = require("./a");

This leads to runtime errors because src/ cannot be found in release/js/. Is there a way to compel typescript to compile to relative paths?

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