gistfile1.txt

> node util/test-source-maps.js "test/fixtures/arrow-methods-obj/fat-assign/actual.js"

test/fixtures/arrow-methods-obj/fat-assign/actual.js

Source code:

let o
now o = {
  f() =>
    this
}


Transformed code:

let o;
o = {
  f() {
    return this;
  }
};
o.f = o.f.bind(o);

AST:

001 Program@(loc: 1:0-6:0 start: 0 end: 36)
002   VariableDeclaration@(loc: 1:0-1:5 start: 0 end: 5)
003     VariableDeclarator@(loc: 1:4-1:5 start: 4 end: 5)
004       Identifier@(loc: 1:4-1:5 start: 4 end: 5)
005   ExpressionStatement@(loc: 2:0-5:1 start: 6 end: 35)
006     AssignmentExpression@(loc: 2:0-5:1 start: 6 end: 35)
007       Identifier@(loc: 2:4-2:5 start: 10 end: 11)
008       ObjectExpression@(loc: 2:8-5:1 start: 14 end: 35)
009         ObjectMethod@(loc: 3:2-4:8 start: 18 end: 33)
010           Identifier@(loc: 3:2-3:3 start: 18 end: 19)
011           BlockStatement@(loc: 3:6-4:8 start: 22 end: 33)
012             ReturnStatement@(loc: 4:4-4:4 start: 29 end: 29)
013               ThisExpression@(loc: 4:4-4:8 start: 29 end: 33)
014   ExpressionStatement@(loc: 5:1-5:1 start: 35 end: 35)
015     AssignmentExpression@(loc: 5:1-5:1 start: 35 end: 35)
016       MemberExpression@(loc: 5:1-5:1 start: 35 end: 35)
017         Identifier@(loc: 2:4-2:5 start: 10 end: 11)
018         Identifier@(loc: 3:2-3:3 start: 18 end: 19)
019       CallExpression@(loc: 5:1-5:1 start: 35 end: 35)
020         MemberExpression@(loc: 5:1-5:1 start: 35 end: 35)
021           MemberExpression@(loc: 5:1-5:1 start: 35 end: 35)
022             Identifier@(loc: 2:4-2:5 start: 10 end: 11)
023             Identifier@(loc: 3:2-3:3 start: 18 end: 19)
024           Identifier@(loc: 5:1-5:1 start: 35 end: 35)
025         Identifier@(loc: 2:4-2:5 start: 10 end: 11)


ERRORS:

Identifier #17 @ (loc: 2:4-2:5 start: 10 end: 11): Starts before parent starts.
Identifier #18 @ (loc: 3:2-3:3 start: 18 end: 19): Starts before parent starts.
Identifier #22 @ (loc: 2:4-2:5 start: 10 end: 11): Starts before parent starts.
Identifier #23 @ (loc: 3:2-3:3 start: 18 end: 19): Starts before parent starts.
Identifier #25 @ (loc: 2:4-2:5 start: 10 end: 11): Starts before parent starts.