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| // replace any ${ENV} values with the appropriate environ.
|
| const envExpr = /(?<!\\)(\\*)\$\{([^${}]+)\}/g
|
| module.exports = (f, env) => f.replace(envExpr, (orig, esc, name) => {
| const val = env[name] !== undefined ? env[name] : `$\{${name}}`
|
| // consume the escape chars that are relevant.
| if (esc.length % 2) {
| return orig.slice((esc.length + 1) / 2)
| }
|
| return (esc.slice(esc.length / 2)) + val
| })
|
|
