TypeError: accounts is not iterable, how to iterate over shell output?

[kaihendry]

Assuming there are many several directories in stacks, how do I iterate over the ls output, like you would do in a while loop in bash?

#!/usr/bin/env zx

const accounts = await $`ls -d stacks/*`;

console.log(accounts);

for (const acc of accounts) {
  console.log(acc);
}

[antonmedv]

Use

await glob(…)

[kaihendry]

Doesn't work...

await glob($`find . -name "README.md"`)
Uncaught TypeError: Patterns must be a string or an array of strings

[antonmedv]

Please read the manual.

[robertsarkozi]

First, it seems you're missing an await inside glob(), but I get the same result even without the internal await.

Then, it seems that

> await glob('README.md', './*/README.md')

is the way, because:

• in

  await glob(await $`find . -name "README.md"`)

the find command gives the results to stdout, not into a variable, which you could then pass to glob.

• in

 var a = await $`find . -name "README.md"`
 console.log(a)

shows that a is undefined, thus bad result.

[antongolub]

I don't know if it's still relevant, but here's what's available now:

1. ProcessOutput.lines()

const p = $`echo 'foo\nbar\r\nbaz'`
assert.deepEqual(await p.lines(), ['foo', 'bar', 'baz'])

2. Iterator API

// Iterate over the running process chunks
const process = $`echo "Line1\nLine2\nLine3"`
const lines = []
for await (const line of process) {
  lines.push(line)
}
assert.deepEqual(lines, ['Line1', 'Line2', 'Line3'])

// Process the output
const o = await $`echo "Line1\nLine2\nLine3"`
const lines = []
for (const line of o) {
  lines.push(line)
}
assert.deepEqual(lines, ['Line1', 'Line2', 'Line3'])