Pulumi TypeScript Skill

Development Workflow

1. Project Setup

# Create new TypeScript project
pulumi new typescript

# Or with a cloud-specific template
pulumi new aws-typescript
pulumi new azure-typescript
pulumi new gcp-typescript

Project structure:

my-project/
├── Pulumi.yaml
├── Pulumi.dev.yaml      # Stack config (use ESC instead)
├── package.json
├── tsconfig.json
└── index.ts

2. Pulumi ESC Integration

Instead of using pulumi config set or stack config files, use Pulumi ESC for centralized secrets and configuration.

Link ESC environment to stack:

# Create ESC environment
pulumi env init myorg/myproject-dev

# Edit environment
pulumi env edit myorg/myproject-dev

# Link to Pulumi stack
pulumi config env add myorg/myproject-dev

ESC environment definition (YAML):

values:
  # Static configuration
  pulumiConfig:
    aws:region: us-west-2
    myapp:instanceType: t3.medium

  # Dynamic OIDC credentials for AWS
  aws:
    login:
      fn::open::aws-login:
        oidc:
          roleArn: arn:aws:iam::123456789:role/pulumi-oidc
          sessionName: pulumi-deploy

  # Pull secrets from AWS Secrets Manager
  secrets:
    fn::open::aws-secrets:
      region: us-west-2
      login: ${aws.login}
      get:
        dbPassword:
          secretId: prod/database/password

  # Expose to environment variables
  environmentVariables:
    AWS_ACCESS_KEY_ID: ${aws.login.accessKeyId}
    AWS_SECRET_ACCESS_KEY: ${aws.login.secretAccessKey}
    AWS_SESSION_TOKEN: ${aws.login.sessionToken}

3. TypeScript Patterns

Basic resource creation:

import * as pulumi from "@pulumi/pulumi";
import * as aws from "@pulumi/aws";

// Get configuration from ESC
const config = new pulumi.Config();
const instanceType = config.require("instanceType");

// Create resources with proper tagging
const bucket = new aws.s3.Bucket("my-bucket", {
    versioning: { enabled: true },
    serverSideEncryptionConfiguration: {
        rule: {
            applyServerSideEncryptionByDefault: {
                sseAlgorithm: "AES256",
            },
        },
    },
    tags: {
        Environment: pulumi.getStack(),
        ManagedBy: "Pulumi",
    },
});

// Export outputs
export const bucketName = bucket.id;
export const bucketArn = bucket.arn;

Component resources for reusability:

import * as pulumi from "@pulumi/pulumi";
import * as aws from "@pulumi/aws";

interface WebServiceArgs {
    port: pulumi.Input<number>;
    imageUri: pulumi.Input<string>;
}

class WebService extends pulumi.ComponentResource {
    public readonly url: pulumi.Output<string>;

    constructor(name: string, args: WebServiceArgs, opts?: pulumi.ComponentResourceOptions) {
        super("custom:app:WebService", name, {}, opts);

        // Create child resources with { parent: this }
        const lb = new aws.lb.LoadBalancer(`${name}-lb`, {
            loadBalancerType: "application",
            // ... configuration
        }, { parent: this });

        this.url = lb.dnsName;
        this.registerOutputs({ url: this.url });
    }
}

Stack references for cross-stack dependencies:

import * as pulumi from "@pulumi/pulumi";

// Reference outputs from networking stack
const networkingStack = new pulumi.StackReference("myorg/networking/prod");
const vpcId = networkingStack.getOutput("vpcId");
const subnetIds = networkingStack.getOutput("privateSubnetIds");

Working with Outputs:

import * as pulumi from "@pulumi/pulumi";

// Use apply for transformations
const uppercaseName = bucket.id.apply(id => id.toUpperCase());

// Use pulumi.all for multiple outputs
const combined = pulumi.all([bucket.id, bucket.arn]).apply(
    ([id, arn]) => `Bucket ${id} has ARN ${arn}`
);

// Conditional resources
const isProd = pulumi.getStack() === "prod";
const monitoring = isProd ? new aws.cloudwatch.MetricAlarm("alarm", {
    // ... configuration
}) : undefined;

4. Using ESC with pulumi env run

Run any command with ESC environment variables injected:

# Run pulumi commands with ESC credentials
pulumi env run myorg/aws-dev -- pulumi up

# Run tests with secrets