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mal/impls/es6/step0_repl.mjs
Joel Martin 8a19f60386 Move implementations into impls/ dir
- Reorder README to have implementation list after "learning tool"
  bullet.

- This also moves tests/ and libs/ into impls. It would be preferrable
  to have these directories at the top level.  However, this causes
  difficulties with the wasm implementations which need pre-open
  directories and have trouble with paths starting with "../../". So
  in lieu of that, symlink those directories to the top-level.

- Move the run_argv_test.sh script into the tests directory for
  general hygiene.
2020-02-10 23:50:16 -06:00

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349 B
JavaScript

import rl from './node_readline.js'
const readline = rl.readline
// read
const READ = str => str
// eval
const EVAL = (ast, env) => ast
// print
const PRINT = exp => exp
// repl
const REP = str => PRINT(EVAL(READ(str), {}))
while (true) {
let line = readline('user> ')
if (line == null) break
if (line) { console.log(REP(line)) }
}