hataraku
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An autonomous coding agent for building AI-powered development tools. The name "Hataraku" (働く) means "to work" in Japanese.
50 lines • 1.76 kB
JavaScript
/**
* Utility for environment variable interpolation in configuration strings
* Supports ${VAR_NAME} and ${VAR_NAME:-default} syntax
*/
/**
* Interpolate environment variables in a string
* Replaces ${VAR_NAME} with the value of the environment variable
* Supports default values with ${VAR_NAME:-default} syntax
*
* @param input String with environment variable references
* @returns String with environment variables interpolated
*/
export function interpolateEnvVars(input) {
if (typeof input !== 'string') {
return input;
}
// Match ${VAR_NAME} or ${VAR_NAME:-default}
return input.replace(/\${([^}]+)}/g, (match, p1) => {
// Check if there's a default value specified
const parts = p1.split(':-');
const varName = parts[0];
const defaultValue = parts.length > 1 ? parts[1] : '';
// Return environment variable value or default
return process.env[varName] || defaultValue;
});
}
/**
* Interpolate environment variables in an object recursively
* Processes all string values in the object
*
* @param obj Object with potential environment variable references
* @returns Object with environment variables interpolated
*/
export function interpolateEnvVarsInObject(obj) {
if (!obj || typeof obj !== 'object') {
return obj;
}
const result = Array.isArray(obj) ? [...obj] : { ...obj };
for (const key in result) {
const value = result[key];
if (typeof value === 'string') {
result[key] = interpolateEnvVars(value);
}
else if (value && typeof value === 'object') {
result[key] = interpolateEnvVarsInObject(value);
}
}
return result;
}
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