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An instance is allocated for a large share of walked expressions, so the boolean facts live in one packed flags slot and the scalar/identifier fields in five slots shared by type, with accessors keeping every public field readable. This shrinks instances from 224 to 144 bytes on V8.

new BasicEvaluatedExpression(): BasicEvaluatedExpression
Returns:BasicEvaluatedExpression
Attributes
array:any[]
bigint:bigint
bool:boolean
expression:AssignmentProperty | Property | CatchClause | ClassDeclaration | ClassExpression | ClassBody | Identifier | SimpleLiteral | RegExpLiteral | BigIntLiteral | ArrayExpression | ArrowFunctionExpression | AssignmentExpression | AwaitExpression | BinaryExpression | SimpleCallExpression | NewExpression | ChainExpression | ConditionalExpression | FunctionExpression | ImportExpression | LogicalExpression | MemberExpression | MetaProperty | ObjectExpression | SequenceExpression | TaggedTemplateExpression | TemplateLiteral | ThisExpression | UnaryExpression | UpdateExpression | YieldExpression | FunctionDeclaration | MethodDefinition | ImportDeclaration | ExportNamedDeclaration | ExportDefaultDeclaration | ExportAllDeclaration | ImportSpecifier | ImportDefaultSpecifier | ImportNamespaceSpecifier | ExportSpecifier | ObjectPattern | ArrayPattern | RestElement | AssignmentPattern | PrivateIdentifier | Program | PropertyDefinition | SpreadElement | ExpressionStatement | BlockStatement | StaticBlock | EmptyStatement | DebuggerStatement | WithStatement | ReturnStatement | LabeledStatement | BreakStatement | ContinueStatement | IfStatement | SwitchStatement | ThrowStatement | TryStatement | WhileStatement | DoWhileStatement | ForStatement | ForInStatement | ForOfStatement | VariableDeclaration | Super | SwitchCase | TemplateElement | VariableDeclarator
falsy:boolean
getMemberRanges:() => [number, number][]
getMembers:() => string[]
getMembersOptionals:() => boolean[]
identifier:string | VariableInfo
items:BasicEvaluatedExpression[]
nullish:boolean
number:number
options:BasicEvaluatedExpression[]
parts:BasicEvaluatedExpression[]
postfix:BasicEvaluatedExpression | null
prefix:BasicEvaluatedExpression | null
quasis:BasicEvaluatedExpression[]
range:[number, number]
Served lazily from the attached expression when not set explicitly: evaluateExpression 's plain results share the expression's range, and most evaluations never read it, so the node's range array is only materialized on demand.
regExp:RegExp
rootInfo:string | VariableInfo
sideEffects:boolean
string:string
templateStringKind:"cooked" | "raw"
truthy:boolean
type:number
wrappedInnerExpressions:BasicEvaluatedExpression[]
addOptions(options): BasicEvaluatedExpression
Attributes
options:BasicEvaluatedExpression[]
Returns:BasicEvaluatedExpression

Adds the provided basic evaluated expression to the basic evaluated expression.

asBool(): boolean | undefined
Returns:boolean | undefined

Creates a boolean representation of this evaluated expression.

asCompileTimeValue(): string | number | bigint | boolean | RegExp | any[] | null | undefined
Returns:string | number | bigint | boolean | RegExp | any[] | null | undefined

As compile time value.

asNullish(): boolean | undefined
Returns:boolean | undefined

Creates a nullish coalescing representation of this evaluated expression.

asString(): string | undefined
Returns:string | undefined

Creates a string representation of this evaluated expression.

couldHaveSideEffects(): boolean
Returns:boolean

Can this expression have side effects?

isArray(): boolean
Returns:boolean
isBigInt(): boolean
Returns:boolean
isBoolean(): boolean
Returns:boolean
isCompileTimeValue(): boolean
Returns:boolean

Is expression a runtime or compile-time value?

isConditional(): boolean
Returns:boolean
isConstArray(): boolean
Returns:boolean
isFalsy(): boolean
Returns:boolean
isIdentifier(): boolean
Returns:boolean
isNull(): boolean
Returns:boolean
isNullish(): boolean | undefined
Returns:boolean | undefined
isNumber(): boolean
Returns:boolean
isPrimitiveType(): boolean | undefined
Returns:boolean | undefined

Is expression a primitive or an object type value?

isRegExp(): boolean
Returns:boolean
isString(): boolean
Returns:boolean
isTemplateString(): boolean
Returns:boolean
isTruthy(): boolean
Returns:boolean
isUndefined(): boolean
Returns:boolean
isUnknown(): boolean
Returns:boolean
isWrapped(): boolean
Returns:boolean
setArray(array): BasicEvaluatedExpression
Attributes
array:string[]
Returns:BasicEvaluatedExpression

Set's the value of this expression to an array of strings.

setBigInt(bigint): BasicEvaluatedExpression
Attributes
bigint:bigint
Returns:BasicEvaluatedExpression

Set's the value of this expression to a BigInt

setBoolean(bool): BasicEvaluatedExpression
Attributes
bool:boolean
Returns:BasicEvaluatedExpression

Set's the value of this expression to a boolean

setExpression(expression?): BasicEvaluatedExpression
Attributes
expression:AssignmentProperty | Property | CatchClause | ClassDeclaration | ClassExpression | ClassBody | Identifier | SimpleLiteral | RegExpLiteral | BigIntLiteral | ArrayExpression | ArrowFunctionExpression | AssignmentExpression | AwaitExpression | BinaryExpression | SimpleCallExpression | NewExpression | ChainExpression | ConditionalExpression | FunctionExpression | ImportExpression | LogicalExpression | MemberExpression | MetaProperty | ObjectExpression | SequenceExpression | TaggedTemplateExpression | TemplateLiteral | ThisExpression | UnaryExpression | UpdateExpression | YieldExpression | FunctionDeclaration | MethodDefinition | ImportDeclaration | ExportNamedDeclaration | ExportDefaultDeclaration | ExportAllDeclaration | ImportSpecifier | ImportDefaultSpecifier | ImportNamespaceSpecifier | ExportSpecifier | ObjectPattern | ArrayPattern | RestElement | AssignmentPattern | PrivateIdentifier | Program | PropertyDefinition | SpreadElement | ExpressionStatement | BlockStatement | StaticBlock | EmptyStatement | DebuggerStatement | WithStatement | ReturnStatement | LabeledStatement | BreakStatement | ContinueStatement | IfStatement | SwitchStatement | ThrowStatement | TryStatement | WhileStatement | DoWhileStatement | ForStatement | ForInStatement | ForOfStatement | VariableDeclaration | Super | SwitchCase | TemplateElement | VariableDeclarator
Returns:BasicEvaluatedExpression

Set the expression node for the expression.

setFalsy(): BasicEvaluatedExpression
Returns:BasicEvaluatedExpression
setIdentifier(identifier, rootInfo, getMembers, getMembersOptionals?, getMemberRanges?): BasicEvaluatedExpression
Attributes
identifier:string | VariableInfo
rootInfo:string | VariableInfo
getMembers:() => string[]
getMembersOptionals:() => boolean[]
getMemberRanges:() => [number, number][]
Returns:BasicEvaluatedExpression

Set's the value of this expression to a particular identifier and its members.

setItems(items): BasicEvaluatedExpression
Attributes
items:BasicEvaluatedExpression[]
Returns:BasicEvaluatedExpression

Set's the value of this expression to an array of expressions.

setNull(): BasicEvaluatedExpression
Returns:BasicEvaluatedExpression
setNullish(value): BasicEvaluatedExpression
Attributes
value:boolean
Returns:BasicEvaluatedExpression

Set's the value of the expression to nullish.

setNumber(number): BasicEvaluatedExpression
Attributes
number:number
Returns:BasicEvaluatedExpression

Set's the value of this expression to a number

setOptions(options): BasicEvaluatedExpression
Attributes
options:BasicEvaluatedExpression[]
Returns:BasicEvaluatedExpression

Stores the options of a conditional expression.

setRange(range): BasicEvaluatedExpression
Attributes
range:[number, number]
Returns:BasicEvaluatedExpression

Set's the range for the expression.

setRegExp(regExp): BasicEvaluatedExpression
Attributes
regExp:RegExp
Returns:BasicEvaluatedExpression

Set's the value of this expression to a regular expression

setSideEffects(sideEffects?): BasicEvaluatedExpression
Attributes
sideEffects:boolean
Returns:BasicEvaluatedExpression

Set whether or not the expression has side effects.

setString(string): BasicEvaluatedExpression
Attributes
string:string
Returns:BasicEvaluatedExpression

Updates string using the provided string.

setTemplateString(quasis, parts, kind): BasicEvaluatedExpression
Attributes
quasis:BasicEvaluatedExpression[]
parts:BasicEvaluatedExpression[]
kind:"cooked" | "raw"
Returns:BasicEvaluatedExpression

Set's the value of this expression to a processed/unprocessed template string. Used for evaluating TemplateLiteral expressions in the JavaScript Parser.

setTruthy(): BasicEvaluatedExpression
Returns:BasicEvaluatedExpression
setUndefined(): BasicEvaluatedExpression
Returns:BasicEvaluatedExpression
setWrapped(prefix?, postfix?, innerExpressions?): BasicEvaluatedExpression
Attributes
prefix:BasicEvaluatedExpression | null
postfix:BasicEvaluatedExpression | null
innerExpressions:BasicEvaluatedExpression[]
Returns:BasicEvaluatedExpression

Wraps an array of expressions with a prefix and postfix expression.