Global

Members

SERVICE

Span names for instrumented operations.

Methods

and(first, second, …more)

Creates an expression that performs a logical 'AND' operation on multiple filter conditions.

// Check if the 'age' field is greater than 18 AND the 'city' field is "London" AND
// the 'status' field is "active"
const condition = and(greaterThan("age", 18), equal("city", "London"), equal("status", "active"));
Parameters:
Name Type Attributes Description
first

The first filter condition.

second

The second filter condition.

more <repeatable>

Additional filter conditions to 'AND' together.

Returns:
Type Description

A new Expression representing the logical 'AND' operation.

array(elements)

Creates an expression that creates a Firestore array value from an input array.

// Create an array value from the input array and reference the 'baz' field value from the input document.
array(['bar', field('baz')]).as('foo');
Parameters:
Name Type Description
elements

The input array to evaluate in the expression.

Returns:
Type Description

A new Expression representing the array function.

conditional(condition, thenExpr, elseExpr)

Creates a conditional expression that evaluates to a 'then' expression if a condition is true and an 'else' expression if the condition is false.

// If 'age' is greater than 18, return "Adult"; otherwise, return "Minor".
conditional(
    greaterThan("age", 18), constant("Adult"), constant("Minor"));
Parameters:
Name Type Description
condition

The condition to evaluate.

thenExpr

The expression to evaluate if the condition is true.

elseExpr

The expression to evaluate if the condition is false.

Returns:
Type Description

A new Expression representing the conditional expression.

countAll()

Creates an aggregation that counts the total number of stage inputs.

// Count the total number of input documents
countAll().as("totalDocument");
Returns:
Type Description

A new AggregateFunction representing the 'countAll' aggregation.

countDistinct(expr)

Creates an aggregation that counts the number of distinct values of a field.

Parameters:
Name Type Description
expr

The expression or field to count distinct values of.

Returns:
Type Description

A new AggregateFunction representing the 'count_distinct' aggregation.

countIf(booleanExpr)

Creates an aggregation that counts the number of stage inputs where the provided boolean expression evaluates to true.

// Count the number of documents where 'is_active' field equals true
countIf(field("is_active").equal(true)).as("numActiveDocuments");
Parameters:
Name Type Description
booleanExpr

The boolean expression to evaluate on each input.

Returns:
Type Description

A new AggregateFunction representing the 'countIf' aggregation.

currentDocument()

Creates an expression that represents the current document being processed.

Returns:
Type Description

An Expression representing the current document.

Example
```typescript
// Define the current document as a variable "doc"
firestore.pipeline().collection("books")
    .define(currentDocument().as("doc"))
    // Access a field from the defined document variable
    .select(variable("doc").getField("title"));
```

currentTimestamp()

Creates an expression that evaluates to the current server timestamp.

// Get the current server timestamp
currentTimestamp()
Returns:
Type Description

A new Expression representing the current server timestamp.

detectMapRepresentation(mapValue)

Detects the 'valueType' for cases where a map value has been used to represent another type.

Parameters:
Name Type Description
mapValue

The map value to probe.

documentMatches(rquery)

Parameters:
Name Type Description
rquery

Define the search query using the search domain-specific language (DSL).

Returns:
Type Description

A BooleanExpression representing the documentMatches function.

field(field)

Creates a Field instance representing the field at the given path.

The path can be a simple field name (e.g., "name") or a dot-separated path to a nested field (e.g., "address.city").

// Create a Field instance for the 'title' field
const titleField = field("title");

// Create a Field instance for a nested field 'author.firstName'
const authorFirstNameField = field("author.firstName");
Parameters:
Name Type Description
field

The path to the field.

Returns:
Type Description

A new Field instance representing the specified field.

geoDistance(fieldName, location)

Parameters:
Name Type Description
fieldName

Specifies the field in the document which contains the first GeoPoint for distance computation.

location

Compute distance to this GeoPoint.

Returns:
Type Description

An Expression representing the geoDistance function.

isError(value)

Creates an expression that checks if a given expression produces an error.

// Check if the result of a calculation is an error
isError(field("title").arrayContains(1));
Parameters:
Name Type Description
value

The expression to check.

Returns:
Type Description

A new Expression representing the 'isError' check.

isMapValue()

Returns true if value is a MapValue.

isTemporalInstant()

Checks if the given value is an instance of Temporal.Instant. Checks both instanceof against runtime Temporal.Instant (if available) and duck typing via [Symbol.toStringTag] and epochNanoseconds bigint property to support polyfills or cross-realm instances.

map(elements)

Creates an expression that creates a Firestore map value from an input object.

// Create a map from the input object and reference the 'baz' field value from the input document.
map({foo: 'bar', baz: field('baz')}).as('data');
Parameters:
Name Type Description
elements

The input map to evaluate in the expression.

Returns:
Type Description

A new Expression representing the map function.

nor(first, second, …more)

Creates an expression that performs a logical 'NOR' operation on multiple filter conditions.

Parameters:
Name Type Attributes Description
first

The first filter condition.

second

The second filter condition.

more <repeatable>

Additional filter conditions to 'NOR' together.

Returns:
Type Description

A new Expression representing the logical 'NOR' operation.

Example
```typescript
// Check if neither the 'age' field is greater than 18 nor the 'city' field is "London"
const condition = nor(
  greaterThan("age", 18),
  equal("city", "London")
);
```

not(booleanExpr)

Creates an expression that negates a filter condition.

// Find documents where the 'completed' field is NOT true
not(equal("completed", true));
Parameters:
Name Type Description
booleanExpr

The filter condition to negate.

Returns:
Type Description

A new Expression representing the negated filter condition.

or(first, second, …more)

Creates an expression that performs a logical 'OR' operation on multiple filter conditions.

// Check if the 'age' field is greater than 18 OR the 'city' field is "London" OR
// the 'status' field is "active"
const condition = or(greaterThan("age", 18), equal("city", "London"), equal("status", "active"));
Parameters:
Name Type Attributes Description
first

The first filter condition.

second

The second filter condition.

more <repeatable>

Additional filter conditions to 'OR' together.

Returns:
Type Description

A new Expression representing the logical 'OR' operation.

pipelineValue()

rand()

Creates an expression that generates a random number between 0.0 and 1.0 but not including 1.0.

Returns:
Type Description

A new Expression representing the rand operation.

Example
```typescript
// Generate a random number between 0.0 and 1.0.
rand();
```

score()

Returns:
Type Description

An Expression representing the score function.

selectablesToMap()

Deprecated: use selectablesToObject instead

setLogFunction(logger)

Sets or disables the log function for all active Firestore instances.

Parameters:
Name Type Description
logger

A log function that takes a message (such as console.log) or null to turn off logging.

switchOn(condition, result, …others)

Creates an expression that evaluates to the result corresponding to the first true condition.

Parameters:
Name Type Attributes Description
condition

The first condition to check.

result

The result if the first condition is true.

others <repeatable>

Additional conditions and results, and optionally a default value.

Returns:
Type Description

A new Expression representing the switch operation.

Example
```typescript
// Return "Active" if field "status" is 1, "Pending" if field "status" is 2,
// and default to "Unknown" if none of the conditions are true.
switchOn(
  equal(field("status"), 1), constant("Active"),
  equal(field("status"), 2), constant("Pending"),
  constant("Unknown")
)
```

validateUserDataHelper()

variable(name)

Creates an expression that retrieves the value of a variable bound via define().

Parameters:
Name Type Description
name

The name of the variable to retrieve.

Returns:
Type Description

An Expression representing the variable's value.

Example
```typescript
db.pipeline().collection("products")
  .define(
    field("price").multiply(0.9).as("discountedPrice"),
    field("stock").add(10).as("newStock")
  )
  .where(variable("discountedPrice").lessThan(100))
  .select(field("name"), variable("newStock"));
```

xor(first, second, …additionalConditions)

Creates an expression that performs a logical 'XOR' (exclusive OR) operation on multiple BooleanExprs.

// Check if only one of the conditions is true: 'age' greater than 18, 'city' is "London",
// or 'status' is "active".
const condition = xor(
    greaterThan("age", 18),
    equal("city", "London"),
    equal("status", "active"));
Parameters:
Name Type Attributes Description
first

The first condition.

second

The second condition.

additionalConditions <repeatable>

Additional conditions to 'XOR' together.

Returns:
Type Description

A new Expression representing the logical 'XOR' operation.

Type Definitions

BulkWriterError

An error thrown when a BulkWriter operation fails.

The error used by BulkWriter~shouldRetryCallback set in BulkWriter#onWriteError.

Properties:
Name Type Description
code GrpcStatus

The status code of the error.

message string

The error message of the error.

documentRef DocumentReference

The document reference the operation was performed on.

operationType 'create' | 'set' | 'update' | 'delete'

The type of operation performed.

failedAttempts number

How many times this operation has been attempted unsuccessfully.

BulkWriterOptions

An options object to configure throttling on BulkWriter.

Whether to disable or configure throttling. By default, throttling is enabled. throttling can be set to either a boolean or a config object. Setting it to true will use default values. You can override the defaults by setting it to false to disable throttling, or by setting the config values to enable throttling with the provided values.

Properties:
Name Type Description
throttling boolean | Object

Whether to disable or enable throttling. Throttling is enabled by default, if the field is set to true or if any custom throttling options are provided. { initialOpsPerSecond: number } sets the initial maximum number of operations per second allowed by the throttler. If initialOpsPerSecond is not set, the default is 500 operations per second. { maxOpsPerSecond: number } sets the maximum number of operations per second allowed by the throttler. If maxOpsPerSecond is not set, no maximum is enforced.

DocumentData

Document data (e.g. for use with set()) consisting of fields mapped to values.

FirestoreDataConverter

Converter used by withConverter() to transform user objects of type AppModelType into Firestore data of type DbModelType.

Using the converter allows you to specify generic type arguments when storing and retrieving objects from Firestore.

Properties:
Name Type Description
toFirestore function

Called by the Firestore SDK to convert a custom model object of type AppModelType into a plain Javascript object (suitable for writing directly to the Firestore database).

fromFirestore function

Called by the Firestore SDK to convert Firestore data into an object of type AppModelType.

Example
```
class Post {
  constructor(readonly title: string, readonly author: string) {}

  toString(): string {
    return this.title + ', by ' + this.author;
  }
}

const postConverter = {
  toFirestore(post: Post): FirebaseFirestore.DocumentData {
    return {title: post.title, author: post.author};
  },
  fromFirestore(
    snapshot: FirebaseFirestore.QueryDocumentSnapshot
  ): Post {
    const data = snapshot.data();
    return new Post(data.title, data.author);
  }
};

const postSnap = await Firestore()
  .collection('posts')
  .withConverter(postConverter)
  .doc().get();
const post = postSnap.data();
if (post !== undefined) {
  post.title; // string
  post.toString(); // Should be defined
  post.someNonExistentProperty; // TS error
}

```

GrpcStatus

Status codes returned by GRPC operations.

See:

Precondition

An options object that configures conditional behavior of update() and delete() calls in DocumentReference, WriteBatch, BulkWriter, and Transaction. Using Preconditions, these calls can be restricted to only apply to documents that match the specified conditions.

Properties:
Name Type Description
lastUpdateTime Timestamp

The update time to enforce. If set, enforces that the document was last updated at lastUpdateTime. Fails the operation if the document was last updated at a different time.

exists boolean

If set, enforces that the target document must or must not exist.

Example
```
const documentRef = firestore.doc('coll/doc');

documentRef.get().then(snapshot => {
  const updateTime = snapshot.updateTime;

  console.log(`Deleting document at update time: ${updateTime.toDate()}`);
  return documentRef.delete({ lastUpdateTime: updateTime });
});

```

ReadOptions

An options object that can be used to configure the behavior of getAll() calls. By providing a fieldMask, these calls can be configured to only return a subset of fields.

Properties:
Name Type Description
fieldMask Array.<(string|FieldPath)>

Specifies the set of fields to return and reduces the amount of data transmitted by the backend. Adding a field mask does not filter results. Documents do not need to contain values for all the fields in the mask to be part of the result set.

SetOptions

An options object that configures the behavior of set() calls in DocumentReference, WriteBatch, and Transaction. These calls can be configured to perform granular merges instead of overwriting the target documents in their entirety by providing a SetOptions object with { merge : true }.

Properties:
Name Type Description
merge boolean

Changes the behavior of a set() call to only replace the values specified in its data argument. Fields omitted from the set() call remain untouched.

mergeFields Array.<(string|FieldPath)>

Changes the behavior of set() calls to only replace the specified field paths. Any field path that is not specified is ignored and remains untouched. It is an error to pass a SetOptions object to a set() call that is missing a value for any of the fields specified here.

UpdateData

Update data (for use with update) that contains paths mapped to values. Fields that contain dots reference nested fields within the document.

You can update a top-level field in your document by using the field name as a key (e.g. foo). The provided value completely replaces the contents for this field.

You can also update a nested field directly by using its field path as a key (e.g. foo.bar). This nested field update replaces the contents at bar but does not modify other data under foo.

Example
```
const documentRef = firestore.doc('coll/doc');
documentRef.set({a1: {a2: 'val'}, b1: {b2: 'val'}, c1: {c2: 'val'}});
documentRef.update({
 b1: {b3: 'val'},
 'c1.c3': 'val',
});
// Value is {a1: {a2: 'val'}, b1: {b3: 'val'}, c1: {c2: 'val', c3: 'val'}}

```

documentSnapshotCallback(snapshot)

onSnapshot() callback that receives a DocumentSnapshot.

Parameters:
Name Type Description
snapshot DocumentSnapshot

A document snapshot.

errorCallback(err)

onSnapshot() callback that receives an error.

Parameters:
Name Type Description
err Error

An error from a listen.

querySnapshotCallback(snapshot)

onSnapshot() callback that receives a QuerySnapshot.

Parameters:
Name Type Description
snapshot QuerySnapshot

A query snapshot.