diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4fd9d8a..c500a92 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,4 +1,4 @@
-# Created with GitHubActions version 0.2.27
+# Created with GitHubActions version 0.3.6
 name: CI
 env:
   GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -8,60 +8,33 @@ on:
 jobs:
   linux:
     name: Test on Ubuntu (Elixir ${{ matrix.elixir }}, OTP ${{ matrix.otp }})
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     strategy:
       matrix:
-        elixir:
-          - '1.13.4'
-          - '1.14.5'
-          - '1.15.8'
-          - '1.16.3'
-          - '1.17.3'
-          - '1.18.0'
-        otp:
-          - '22.3'
-          - '23.3'
-          - '24.3'
-          - '25.3'
-          - '26.2'
-          - '27.2'
-        exclude:
-          - elixir: '1.13.4'
+        include:
+          - elixir: '1.18.4'
+            otp: '28.1'
+            coverage: true
+            lint: true
+          - elixir: '1.18.4'
+            otp: '27.3'
+          - elixir: '1.18.4'
             otp: '26.2'
-          - elixir: '1.13.4'
-            otp: '27.2'
-          - elixir: '1.14.5'
-            otp: '22.3'
-          - elixir: '1.14.5'
-            otp: '27.2'
-          - elixir: '1.15.8'
-            otp: '22.3'
-          - elixir: '1.15.8'
-            otp: '23.3'
-          - elixir: '1.15.8'
-            otp: '27.2'
-          - elixir: '1.16.3'
-            otp: '22.3'
-          - elixir: '1.16.3'
-            otp: '23.3'
-          - elixir: '1.16.3'
-            otp: '27.2'
-          - elixir: '1.17.3'
-            otp: '22.3'
-          - elixir: '1.17.3'
-            otp: '23.3'
+          - elixir: '1.18.4'
+            otp: '25.3'
           - elixir: '1.17.3'
+            otp: '25.3'
+          - elixir: '1.16.3'
             otp: '24.3'
-          - elixir: '1.18.0'
-            otp: '22.3'
-          - elixir: '1.18.0'
-            otp: '23.3'
-          - elixir: '1.18.0'
+          - elixir: '1.15.8'
+            otp: '24.3'
+          - elixir: '1.14.5'
             otp: '24.3'
     steps:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Setup Elixir
+        id: setup-beam
         uses: erlef/setup-beam@v1
         with:
           elixir-version: ${{ matrix.elixir }}
@@ -70,18 +43,33 @@ jobs:
         uses: actions/cache@v4
         with:
           path: deps
-          key: deps-${{ runner.os }}-${{ matrix.elixir }}-${{ matrix.otp }}-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
+          key: "deps\
+            -${{ runner.os }}\
+            -${{ matrix.elixir }}\
+            -${{ matrix.otp }}\
+            -${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}\
+            -${{ steps.setup-beam.outputs.setup-beam-version }}"
       - name: Restore _build
         uses: actions/cache@v4
         with:
           path: _build
-          key: _build-${{ runner.os }}-${{ matrix.elixir }}-${{ matrix.otp }}-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
+          key: "_build\
+            -${{ runner.os }}\
+            -${{ matrix.elixir }}\
+            -${{ matrix.otp }}\
+            -${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}\
+            -${{ steps.setup-beam.outputs.setup-beam-version }}"
       - name: Restore test/support/plts
+        if: ${{ matrix.lint }}
         uses: actions/cache@v4
         with:
           path: test/support/plts
-          key: test/support/plts-${{ runner.os }}-${{ matrix.elixir }}-${{ matrix.otp }}-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
-        if: ${{ contains(matrix.elixir, '1.18.0') && contains(matrix.otp, '27.2') }}
+          key: "test/support/plts\
+            -${{ runner.os }}\
+            -${{ matrix.elixir }}\
+            -${{ matrix.otp }}\
+            -${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}\
+            -${{ steps.setup-beam.outputs.setup-beam-version }}"
       - name: Get dependencies
         run: mix deps.get
       - name: Compile dependencies
@@ -89,20 +77,20 @@ jobs:
       - name: Compile project
         run: MIX_ENV=test mix compile --warnings-as-errors
       - name: Check unused dependencies
-        if: ${{ contains(matrix.elixir, '1.18.0') && contains(matrix.otp, '27.2') }}
+        if: ${{ matrix.lint }}
         run: mix deps.unlock --check-unused
       - name: Check code format
-        if: ${{ contains(matrix.elixir, '1.18.0') && contains(matrix.otp, '27.2') }}
+        if: ${{ matrix.lint }}
         run: mix format --check-formatted
       - name: Lint code
-        if: ${{ contains(matrix.elixir, '1.18.0') && contains(matrix.otp, '27.2') }}
+        if: ${{ matrix.lint }}
         run: mix credo --strict
       - name: Run tests
+        if: ${{ !matrix.coverage }}
         run: mix test
-        if: ${{ !(contains(matrix.elixir, '1.18.0') && contains(matrix.otp, '27.2')) }}
       - name: Run tests with coverage
+        if: ${{ matrix.coverage }}
         run: mix coveralls.github
-        if: ${{ contains(matrix.elixir, '1.18.0') && contains(matrix.otp, '27.2') }}
       - name: Static code analysis
+        if: ${{ matrix.lint }}
         run: mix dialyzer --format github --force-check
-        if: ${{ contains(matrix.elixir, '1.18.0') && contains(matrix.otp, '27.2') }}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 134512d..55db0d5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,11 @@
 # Changelog
 
-## 1.1.2 - dev
+## 1.2.0 - dev
+
++ Changes for Elixir 1.19
++ Required Elixir version set to `~> 1.14`
++ Clean up `extra_applications`
 
-+ Clean up `extra_applications`.
 
 ## 1.1.1 - 2024/11/15
 
@@ -53,7 +56,7 @@ have been removed from the argument list and moved to the options.
 
 + Add `Rewrite.dot_formatter/1/2` to set and get formatters.
 
-+ Add `Rewrite.format/2` and `Rewrite.fromat!/2` to format a project.
++ Add `Rewrite.format/2` and `Rewrite.format!/2` to format a project.
 
 + Add `Rewrite.format_source/3` to format a source in a project.
 
diff --git a/lib/rewrite.ex b/lib/rewrite.ex
index 8bd52ed..051b801 100644
--- a/lib/rewrite.ex
+++ b/lib/rewrite.ex
@@ -2,27 +2,27 @@ defmodule Rewrite do
   @moduledoc """
   `Rewrite` is a tool for modifying, adding and removing files in a `Mix` project.
 
-  The package is intended for use in `Mix` tasks. `Rewrite` itself uses functions 
-  provided by `Mix`. 
+  The package is intended for use in `Mix` tasks. `Rewrite` itself uses functions
+  provided by `Mix`.
 
-  With `Rewrite.read!/2` you can load the whole project. Then you can modify the 
-  project with a number of functions provided by `Rewrite` and `Rewrite.Source` 
-  without writing any changes back to the file system. All changes are stored in 
-  the source structs. Any version of a source is available in the project. To 
+  With `Rewrite.read!/2` you can load the whole project. Then you can modify the
+  project with a number of functions provided by `Rewrite` and `Rewrite.Source`
+  without writing any changes back to the file system. All changes are stored in
+  the source structs. Any version of a source is available in the project. To
   write the whole project back to the file system, the `Rewrite.write_all/2` can
   be used.
 
-  Elixir source files can be modified by modifying the AST. For this `Rewrite` 
+  Elixir source files can be modified by modifying the AST. For this `Rewrite`
   uses the `Sourceror` package to create the AST and to convert it back. The
   `Sourceror` package also provides all the utilities needed to manipulate the
   AST.
 
-  Sources can also receive a `Rewrite.Issue` to document problems or information 
-  with the source. 
+  Sources can also receive a `Rewrite.Issue` to document problems or information
+  with the source.
 
-  `Rewrite` respects the `.formatter.exs` in the project when rewriting sources. 
-  To do this, the formatter can be read by `Rewrite.DotFormatter` and the 
-  resulting DotFormatter struct can be used in the function to update the 
+  `Rewrite` respects the `.formatter.exs` in the project when rewriting sources.
+  To do this, the formatter can be read by `Rewrite.DotFormatter` and the
+  resulting DotFormatter struct can be used in the function to update the
   sources.
   """
 
@@ -58,10 +58,10 @@ defmodule Rewrite do
 
   ## Options
 
-    * `:filetypes` - a list of modules implementing the behavior 
-      `Rewrite.Filetype`. This list is used to add the `filetype` to the 
-      `sources` of the corresponding files. The list can contain modules 
-      representing a file type or a tuple of `{module(), keyword()}`. Rewrite 
+    * `:filetypes` - a list of modules implementing the behavior
+      `Rewrite.Filetype`. This list is used to add the `filetype` to the
+      `sources` of the corresponding files. The list can contain modules
+      representing a file type or a tuple of `{module(), keyword()}`. Rewrite
       uses the keyword list from the tuple as the options argument when a file
       is read.
 
@@ -105,9 +105,9 @@ defmodule Rewrite do
 
     * Accepts the same options as `new/1`.
 
-    * 'exclude' - a list of paths and/or glob expressions to exclude sources 
-      from the project. The option also accepts a predicate function which is 
-      called for each source path.  The exclusion takes place before the file is 
+    * 'exclude' - a list of paths and/or glob expressions to exclude sources
+      from the project. The option also accepts a predicate function which is
+      called for each source path.  The exclusion takes place before the file is
       read.
   """
   @spec new!(input() | [input()], opts) :: t()
@@ -122,12 +122,12 @@ defmodule Rewrite do
   ## Options
 
     * `:force`, default: `false` - forces the reading of sources. With
-      `force: true` updates and issues for an already existing source are 
+      `force: true` updates and issues for an already existing source are
       deleted.
 
-    * `:exclude` - a list of paths and/or glob expressions to exclude sources 
-      from the project. The option also accepts a predicate function which is 
-      called for each source path.  The exclusion takes place before the file is 
+    * `:exclude` - a list of paths and/or glob expressions to exclude sources
+      from the project. The option also accepts a predicate function which is
+      called for each source path.  The exclusion takes place before the file is
       read.
   """
   @spec read!(t(), input() | [input()], opts()) :: t()
@@ -258,9 +258,9 @@ defmodule Rewrite do
   end
 
   @doc """
-  Deletes the source for the given `path` from the `rewrite`. 
+  Deletes the source for the given `path` from the `rewrite`.
 
-  The file system files are not removed, even if the project is written. Use 
+  The file system files are not removed, even if the project is written. Use
   `rm/2` or `rm!/2` to delete a file and source.
 
   If the source is not part of the `rewrite` project the unchanged `rewrite` is
@@ -293,7 +293,7 @@ defmodule Rewrite do
   @doc """
   Drops the sources with the given `paths` from the `rewrite` project.
 
-  The file system files are not removed, even if the project is written. Use 
+  The file system files are not removed, even if the project is written. Use
   `rm/2` or `rm!/2` to delete a file and source.
 
   If `paths` contains paths that are not in `rewrite`, they're simply ignored.
@@ -315,7 +315,7 @@ defmodule Rewrite do
   end
 
   @doc """
-  Tries to delete the `source` file in the file system and removes the `source` 
+  Tries to delete the `source` file in the file system and removes the `source`
   from the `rewrite` project.
 
   Returns `{:ok, rewrite}` if successful, or `{:error, error}` if an error
@@ -808,7 +808,7 @@ defmodule Rewrite do
 
   Returns `{:ok, rewrite}` if all sources are written successfully.
 
-  Returns `{:error, reasons, rewrite}` where `rewrite` is updated for all 
+  Returns `{:error, reasons, rewrite}` where `rewrite` is updated for all
   sources that are written successfully.
 
   ## Options
@@ -850,9 +850,9 @@ defmodule Rewrite do
   @doc """
   Formats the given `rewrite` project with the given `dot_formatter`.
 
-  Uses the formatter from `dot_formatter/2` if no formatter ist set by 
-  `:dot_formatter` in the options. The other options are the same as for 
-  `DotFormatter.read!/2`. 
+  Uses the formatter from `dot_formatter/2` if no formatter ist set by
+  `:dot_formatter` in the options. The other options are the same as for
+  `DotFormatter.read!/2`.
   """
   @spec format(t(), opts()) :: {:ok, t()} | {:error, term()}
   def format(%Rewrite{} = rewrite, opts \\ []) do
@@ -874,9 +874,9 @@ defmodule Rewrite do
   @doc """
   Formats a source in a `rewrite` project.
 
-  Uses the formatter from `dot_formatter/2` if no formatter ist set by 
-  `:dot_formatter` in the options. The other options are the same as for 
-  `Code.format_string!/2`. 
+  Uses the formatter from `dot_formatter/2` if no formatter ist set by
+  `:dot_formatter` in the options. The other options are the same as for
+  `Code.format_string!/2`.
   """
   @spec format_source(t(), Path.t() | Source.t(), keyword()) :: {:ok, t()} | {:error, term()}
   def format_source(rewrite, file, opts \\ [])
@@ -904,7 +904,7 @@ defmodule Rewrite do
   @doc """
   Returns the `DotFormatter` for the given `rewrite` project.
 
-  When no formatter is set, the default formatter from 
+  When no formatter is set, the default formatter from
   `Rewrite.DotFormatter.default/0` is returned. A dot formatter can be set with
   `dot_formatter/2`.
   """
@@ -924,11 +924,11 @@ defmodule Rewrite do
   @doc """
   Creates a new `%Source{}` and puts the source to the `%Rewrite{}` project.
 
-  The `:filetypes` option of the project is used to create the source. If 
-  options have been specified for the file type, the given options will be 
+  The `:filetypes` option of the project is used to create the source. If
+  options have been specified for the file type, the given options will be
   merged into those options.
 
-  Use `create_source/4` if the source is not to be inserted directly into the 
+  Use `create_source/4` if the source is not to be inserted directly into the
   project.
   """
   @spec new_source(t(), Path.t(), String.t(), opts()) :: {:ok, t()} | {:error, Error.t()}
@@ -958,12 +958,12 @@ defmodule Rewrite do
   @doc """
   Creates a new `%Source{}` without putting it to the `%Rewrite{}` project.
 
-  The `:filetypes` option of the project is used to create the source. If 
-  options have been specified for the file type, the given options will be 
-  merged into those options. If no `path` is given, the default file type is 
+  The `:filetypes` option of the project is used to create the source. If
+  options have been specified for the file type, the given options will be
+  merged into those options. If no `path` is given, the default file type is
   created.
 
-  The function does not check whether the `%Rewrite{}` project already has a 
+  The function does not check whether the `%Rewrite{}` project already has a
   `%Source{}` with the specified path.
 
   Use `new_source/4` if the source is to be inserted directly into the project.
@@ -1023,14 +1023,13 @@ defmodule Rewrite do
     end
 
     def slice(rewrite) do
-      sources = rewrite.sources |> Map.values() |> Enum.sort_by(fn source -> source.path end)
-      length = length(sources)
-
-      {:ok, length,
-       fn
-         start, count when start + count == length -> Enum.drop(sources, start)
-         start, count -> sources |> Enum.drop(start) |> Enum.take(count)
-       end}
+      size = map_size(rewrite.sources)
+
+      to_list = fn rewrite ->
+        rewrite.sources |> Map.values() |> Enum.sort_by(fn source -> source.path end)
+      end
+
+      {:ok, size, to_list}
     end
 
     def reduce(rewrite, acc, fun) do
diff --git a/lib/rewrite/dot_formatter.ex b/lib/rewrite/dot_formatter.ex
index 81e49a0..e91158c 100644
--- a/lib/rewrite/dot_formatter.ex
+++ b/lib/rewrite/dot_formatter.ex
@@ -1076,6 +1076,7 @@ defmodule Rewrite.DotFormatter do
     fn input ->
       case Code.format_string!(input, formatter_opts) do
         [] -> ""
+        "" -> ""
         formatted -> IO.iodata_to_binary([formatted, ?\n])
       end
     end
@@ -1175,7 +1176,7 @@ defmodule Rewrite.DotFormatter do
     end
   end
 
-  defp eval_subs(dot_formatter, project, opts) do
+  defp eval_subs(%DotFormatter{} = dot_formatter, project, opts) do
     subdirectories = dot_formatter.subdirectories || []
 
     result =
@@ -1190,7 +1191,7 @@ defmodule Rewrite.DotFormatter do
 
     case result do
       {:error, _reason} = error -> error
-      result -> {:ok, %DotFormatter{dot_formatter | subs: result}}
+      result -> {:ok, %{dot_formatter | subs: result}}
     end
   end
 
diff --git a/lib/rewrite/source.ex b/lib/rewrite/source.ex
index ffacc27..6db0054 100644
--- a/lib/rewrite/source.ex
+++ b/lib/rewrite/source.ex
@@ -76,7 +76,7 @@ defmodule Rewrite.Source do
     * `from` - contains `:file` or `:string` depending on whether the `source`
       is created from a file or a string.
 
-    * `hash` - of the `source`. The `hash` is built from the `content` and 
+    * `hash` - of the `source`. The `hash` is built from the `content` and
       `path`.
 
     * `history` - of the `source`.
@@ -85,15 +85,15 @@ defmodule Rewrite.Source do
 
     * `owner` - of the `source`.
 
-    * `path` - of the `source`. Can be `nil` if the `source` was created by a 
+    * `path` - of the `source`. Can be `nil` if the `source` was created by a
       `string`.
 
     * `private` - a field for user defined data.
 
-    * `timestamp` - is set to the timestamp of the last modification of the file 
+    * `timestamp` - is set to the timestamp of the last modification of the file
       on disk at the time it was read.
 
-      If the `source` was created by a `string`, the timestamp is the creation 
+      If the `source` was created by a `string`, the timestamp is the creation
       time.
 
       The timestamp will be updated when the `source` is updated.
@@ -101,7 +101,7 @@ defmodule Rewrite.Source do
   @type t :: %Source{
           path: Path.t() | nil,
           content: String.t(),
-          hash: String.t(),
+          hash: non_neg_integer(),
           history: [{kind(), by(), String.t()}],
           issues: [{version(), issue()}],
           filetype: filetype(),
@@ -157,9 +157,9 @@ defmodule Rewrite.Source do
 
   ## Options
 
-    * `:owner` - an association to the module that owns the `source`. 
+    * `:owner` - an association to the module that owns the `source`.
 
-    * `:dot_formatter` - a fromatter for the `source`.
+    * `:dot_formatter` - a formatter for the `source`.
 
     * `path` - the path of the `source`.
 
@@ -457,7 +457,7 @@ defmodule Rewrite.Source do
       ...>   ":a"
       ...>   |> Source.Ex.from_string()
       ...>   |> Source.update(:quoted, fn quoted ->
-      ...>     {:__block__, meta, [atom]} = quoted 
+      ...>     {:__block__, meta, [atom]} = quoted
       ...>     {:__block__, meta, [{:ok, atom}]}
       ...>   end)
       iex> source.content
@@ -526,20 +526,20 @@ defmodule Rewrite.Source do
 
   defp update_timestamp(source), do: %{source | timestamp: now()}
 
-  defp do_update(source, :path, path) do
-    %Source{source | path: path}
+  defp do_update(%Source{} = source, :path, path) do
+    %{source | path: path}
   end
 
-  defp do_update(source, :content, content) do
-    %Source{source | content: content}
+  defp do_update(%Source{} = source, :content, content) do
+    %{source | content: content}
   end
 
-  defp update_filetype(%{filetype: nil} = source, _key, _opts), do: source
+  defp update_filetype(%Source{filetype: nil} = source, _key, _opts), do: source
 
-  defp update_filetype(%{filetype: %module{}} = source, key, opts) when is_atom(key) do
+  defp update_filetype(%Source{filetype: %module{}} = source, key, opts) when is_atom(key) do
     filetype = module.handle_update(source, key, opts)
 
-    %Source{source | filetype: filetype}
+    %{source | filetype: filetype}
   end
 
   defp update_content(source, nil, _by), do: source
@@ -890,7 +890,7 @@ defmodule Rewrite.Source do
   @doc ~s'''
   Formats the given `source`.
 
-  If the `source` was formatted the `source` gets a new `:history` entry, 
+  If the `source` was formatted the `source` gets a new `:history` entry,
   otherwise the unchanged `source` is returned.
 
   ## Options
@@ -900,11 +900,11 @@ defmodule Rewrite.Source do
 
     * `dot_formatter` - defaults to `Rewrite.DotFormatter.default/0`.
 
-    * Accepts also the same options as `Code.format_string!/2`. 
-    
+    * Accepts also the same options as `Code.format_string!/2`.
+
   ## Examples
 
-      
+
       iex> source = Source.Ex.from_string("""
       ...> defmodule    Foo do
       ...>     def   foo(x),   do:    bar x
@@ -920,7 +920,7 @@ defmodule Rewrite.Source do
       end
       """
       iex> dot_formatter = DotFormatter.from_formatter_opts(locals_without_parens: [bar: 1])
-      iex> {:ok, formatted} = Source.format(source, 
+      iex> {:ok, formatted} = Source.format(source,
       ...>   dot_formatter: dot_formatter, force_do_end_blocks: true
       ...> )
       iex> formatted.content
@@ -932,13 +932,13 @@ defmodule Rewrite.Source do
       end
       """
   '''
-  @spec format(t(), opts()) :: {:ok, t()} | {:errror, term()}
+  @spec format(t(), opts()) :: {:ok, t()} | {:error, term()}
   def format(%Source{} = source, opts \\ []) do
     path = Map.get(source, :path) || default_path(source)
-    dot_fromatter = Keyword.get(opts, :dot_formatter, DotFormatter.default())
+    dot_formatter = Keyword.get(opts, :dot_formatter, DotFormatter.default())
     by = Keyword.get(opts, :by, Rewrite)
 
-    with {:ok, formatted} <- DotFormatter.format_string(dot_fromatter, path, source.content, opts) do
+    with {:ok, formatted} <- DotFormatter.format_string(dot_formatter, path, source.content, opts) do
       {:ok, update(source, :content, formatted, by: by)}
     end
   end
diff --git a/lib/rewrite/source/ex.ex b/lib/rewrite/source/ex.ex
index 0c3d666..15e5a02 100644
--- a/lib/rewrite/source/ex.ex
+++ b/lib/rewrite/source/ex.ex
@@ -15,7 +15,7 @@ defmodule Rewrite.Source.Ex do
   new code is parsed to a new `:quoted`. That means that
   `Source.update(source, :quoted, quoted)` also updates the AST.
 
-  The resyncing of `:quoted` can be suppressed with the option 
+  The resyncing of `:quoted` can be suppressed with the option
   `resync_quoted: false`.
 
   ## Examples
@@ -276,10 +276,10 @@ defmodule Rewrite.Source.Ex do
     end
   end
 
-  @deprecated "Use the fromatting functionlity provided by Rewrite.DotFormatter instead."
+  @deprecated "Use the formatting functionlity provided by Rewrite.DotFormatter instead."
   def put_formatter_opts(source, _opts), do: source
 
-  @deprecated "Use the fromatting functionlity provided by Rewrite.DotFormatter instead."
+  @deprecated "Use the formatting functionlity provided by Rewrite.DotFormatter instead."
   def format(source, _formatter_opts \\ nil) do
     dot_formatter =
       case DotFormatter.read() do
diff --git a/mix.exs b/mix.exs
index c7fd2eb..847ec62 100644
--- a/mix.exs
+++ b/mix.exs
@@ -13,12 +13,12 @@ defmodule Rewrite.MixProject do
       description: description(),
       dialyzer: dialyzer(),
       docs: docs(),
-      elixir: "~> 1.13",
+      elixir: "~> 1.14",
       package: package(),
-      preferred_cli_env: preferred_cli_env(),
       source_url: @source_url,
       start_permanent: Mix.env() == :prod,
       test_coverage: [tool: ExCoveralls],
+      test_ignore_filters: [~r'test/support/.*', ~r'test/fixtures/.*'],
       xref: [exclude: [FreedomFormatter.Formatter]]
     ]
   end
@@ -30,6 +30,19 @@ defmodule Rewrite.MixProject do
     ]
   end
 
+  def cli do
+    [
+      preferred_envs: [
+        carp: :test,
+        cover: :test,
+        coveralls: :test,
+        "coveralls.detail": :test,
+        "coveralls.html": :test,
+        "coveralls.github": :test
+      ]
+    ]
+  end
+
   defp description do
     "An API for rewriting sources in an Elixir project. Powered by sourceror."
   end
@@ -58,17 +71,6 @@ defmodule Rewrite.MixProject do
     ]
   end
 
-  def preferred_cli_env do
-    [
-      carp: :test,
-      cover: :test,
-      coveralls: :test,
-      "coveralls.detail": :test,
-      "coveralls.html": :test,
-      "coveralls.github": :test
-    ]
-  end
-
   defp aliases do
     [
       carp: "test --trace --seed 0 --max-failures 1",
diff --git a/mix.lock b/mix.lock
index 598cc96..6185aa0 100644
--- a/mix.lock
+++ b/mix.lock
@@ -1,25 +1,25 @@
 %{
-  "benchee": {:hex, :benchee, "1.3.1", "c786e6a76321121a44229dde3988fc772bca73ea75170a73fd5f4ddf1af95ccf", [:mix], [{:deep_merge, "~> 1.0", [hex: :deep_merge, repo: "hexpm", optional: false]}, {:statistex, "~> 1.0", [hex: :statistex, repo: "hexpm", optional: false]}, {:table, "~> 0.1.0", [hex: :table, repo: "hexpm", optional: true]}], "hexpm", "76224c58ea1d0391c8309a8ecbfe27d71062878f59bd41a390266bf4ac1cc56d"},
+  "benchee": {:hex, :benchee, "1.4.0", "9f1f96a30ac80bab94faad644b39a9031d5632e517416a8ab0a6b0ac4df124ce", [:mix], [{:deep_merge, "~> 1.0", [hex: :deep_merge, repo: "hexpm", optional: false]}, {:statistex, "~> 1.0", [hex: :statistex, repo: "hexpm", optional: false]}, {:table, "~> 0.1.0", [hex: :table, repo: "hexpm", optional: true]}], "hexpm", "299cd10dd8ce51c9ea3ddb74bb150f93d25e968f93e4c1fa31698a8e4fa5d715"},
   "benchee_dsl": {:hex, :benchee_dsl, "0.5.3", "f214a33076c79b205780e21a9712f977e1aaf2402acb8b59ff99cd4e9c151499", [:mix], [{:benchee, ">= 0.99.0 and < 2.0.0", [hex: :benchee, repo: "hexpm", optional: false]}, {:kino, "~> 0.6", [hex: :kino, repo: "hexpm", optional: false]}], "hexpm", "68b829aa4d2782a225dcb0b9652e440b49264b78aa37fe4e120fe784bbfcb466"},
   "bunt": {:hex, :bunt, "1.0.0", "081c2c665f086849e6d57900292b3a161727ab40431219529f13c4ddcf3e7a44", [:mix], [], "hexpm", "dc5f86aa08a5f6fa6b8096f0735c4e76d54ae5c9fa2c143e5a1fc7c1cd9bb6b5"},
-  "credo": {:hex, :credo, "1.7.10", "6e64fe59be8da5e30a1b96273b247b5cf1cc9e336b5fd66302a64b25749ad44d", [:mix], [{:bunt, "~> 0.2.1 or ~> 1.0", [hex: :bunt, repo: "hexpm", optional: false]}, {:file_system, "~> 0.2 or ~> 1.0", [hex: :file_system, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "71fbc9a6b8be21d993deca85bf151df023a3097b01e09a2809d460348561d8cd"},
+  "credo": {:hex, :credo, "1.7.12", "9e3c20463de4b5f3f23721527fcaf16722ec815e70ff6c60b86412c695d426c1", [:mix], [{:bunt, "~> 0.2.1 or ~> 1.0", [hex: :bunt, repo: "hexpm", optional: false]}, {:file_system, "~> 0.2 or ~> 1.0", [hex: :file_system, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "8493d45c656c5427d9c729235b99d498bd133421f3e0a683e5c1b561471291e5"},
   "deep_merge": {:hex, :deep_merge, "1.0.0", "b4aa1a0d1acac393bdf38b2291af38cb1d4a52806cf7a4906f718e1feb5ee961", [:mix], [], "hexpm", "ce708e5f094b9cd4e8f2be4f00d2f4250c4095be93f8cd6d018c753894885430"},
-  "dialyxir": {:hex, :dialyxir, "1.4.5", "ca1571ac18e0f88d4ab245f0b60fa31ff1b12cbae2b11bd25d207f865e8ae78a", [:mix], [{:erlex, ">= 0.2.7", [hex: :erlex, repo: "hexpm", optional: false]}], "hexpm", "b0fb08bb8107c750db5c0b324fa2df5ceaa0f9307690ee3c1f6ba5b9eb5d35c3"},
-  "earmark_parser": {:hex, :earmark_parser, "1.4.42", "f23d856f41919f17cd06a493923a722d87a2d684f143a1e663c04a2b93100682", [:mix], [], "hexpm", "6915b6ca369b5f7346636a2f41c6a6d78b5af419d61a611079189233358b8b8b"},
+  "dialyxir": {:hex, :dialyxir, "1.4.6", "7cca478334bf8307e968664343cbdb432ee95b4b68a9cba95bdabb0ad5bdfd9a", [:mix], [{:erlex, ">= 0.2.7", [hex: :erlex, repo: "hexpm", optional: false]}], "hexpm", "8cf5615c5cd4c2da6c501faae642839c8405b49f8aa057ad4ae401cb808ef64d"},
+  "earmark_parser": {:hex, :earmark_parser, "1.4.44", "f20830dd6b5c77afe2b063777ddbbff09f9759396500cdbe7523efd58d7a339c", [:mix], [], "hexpm", "4778ac752b4701a5599215f7030989c989ffdc4f6df457c5f36938cc2d2a2750"},
   "erlex": {:hex, :erlex, "0.2.7", "810e8725f96ab74d17aac676e748627a07bc87eb950d2b83acd29dc047a30595", [:mix], [], "hexpm", "3ed95f79d1a844c3f6bf0cea61e0d5612a42ce56da9c03f01df538685365efb0"},
-  "ex_doc": {:hex, :ex_doc, "0.36.1", "4197d034f93e0b89ec79fac56e226107824adcce8d2dd0a26f5ed3a95efc36b1", [:mix], [{:earmark_parser, "~> 1.4.42", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_c, ">= 0.1.0", [hex: :makeup_c, repo: "hexpm", optional: true]}, {:makeup_elixir, "~> 0.14 or ~> 1.0", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1 or ~> 1.0", [hex: :makeup_erlang, repo: "hexpm", optional: false]}, {:makeup_html, ">= 0.1.0", [hex: :makeup_html, repo: "hexpm", optional: true]}], "hexpm", "d7d26a7cf965dacadcd48f9fa7b5953d7d0cfa3b44fa7a65514427da44eafd89"},
-  "excoveralls": {:hex, :excoveralls, "0.18.3", "bca47a24d69a3179951f51f1db6d3ed63bca9017f476fe520eb78602d45f7756", [:mix], [{:castore, "~> 1.0", [hex: :castore, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "746f404fcd09d5029f1b211739afb8fb8575d775b21f6a3908e7ce3e640724c6"},
-  "file_system": {:hex, :file_system, "1.0.1", "79e8ceaddb0416f8b8cd02a0127bdbababe7bf4a23d2a395b983c1f8b3f73edd", [:mix], [], "hexpm", "4414d1f38863ddf9120720cd976fce5bdde8e91d8283353f0e31850fa89feb9e"},
+  "ex_doc": {:hex, :ex_doc, "0.38.4", "ab48dff7a8af84226bf23baddcdda329f467255d924380a0cf0cee97bb9a9ede", [:mix], [{:earmark_parser, "~> 1.4.44", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_c, ">= 0.1.0", [hex: :makeup_c, repo: "hexpm", optional: true]}, {:makeup_elixir, "~> 0.14 or ~> 1.0", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1 or ~> 1.0", [hex: :makeup_erlang, repo: "hexpm", optional: false]}, {:makeup_html, ">= 0.1.0", [hex: :makeup_html, repo: "hexpm", optional: true]}], "hexpm", "f7b62346408a83911c2580154e35613eb314e0278aeea72ed7fedef9c1f165b2"},
+  "excoveralls": {:hex, :excoveralls, "0.18.5", "e229d0a65982613332ec30f07940038fe451a2e5b29bce2a5022165f0c9b157e", [:mix], [{:castore, "~> 1.0", [hex: :castore, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "523fe8a15603f86d64852aab2abe8ddbd78e68579c8525ae765facc5eae01562"},
+  "file_system": {:hex, :file_system, "1.1.1", "31864f4685b0148f25bd3fbef2b1228457c0c89024ad67f7a81a3ffbc0bbad3a", [:mix], [], "hexpm", "7a15ff97dfe526aeefb090a7a9d3d03aa907e100e262a0f8f7746b78f8f87a5d"},
   "fss": {:hex, :fss, "0.1.1", "9db2344dbbb5d555ce442ac7c2f82dd975b605b50d169314a20f08ed21e08642", [:mix], [], "hexpm", "78ad5955c7919c3764065b21144913df7515d52e228c09427a004afe9c1a16b0"},
   "glob_ex": {:hex, :glob_ex, "0.1.11", "cb50d3f1ef53f6ca04d6252c7fde09fd7a1cf63387714fe96f340a1349e62c93", [:mix], [], "hexpm", "342729363056e3145e61766b416769984c329e4378f1d558b63e341020525de4"},
   "jason": {:hex, :jason, "1.4.4", "b9226785a9aa77b6857ca22832cffa5d5011a667207eb2a0ad56adb5db443b8a", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "c5eb0cab91f094599f94d55bc63409236a8ec69a21a67814529e8d5f6cc90b3b"},
-  "kino": {:hex, :kino, "0.14.2", "46c5da03f2d62dc119ec5e1c1493f409f08998eac26015ecdfae322ffff46d76", [:mix], [{:fss, "~> 0.1.0", [hex: :fss, repo: "hexpm", optional: false]}, {:nx, "~> 0.1", [hex: :nx, repo: "hexpm", optional: true]}, {:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: true]}, {:table, "~> 0.1.2", [hex: :table, repo: "hexpm", optional: false]}], "hexpm", "f54924dd0800ee8b291fe437f942889e90309eb3541739578476f53c1d79c968"},
+  "kino": {:hex, :kino, "0.17.0", "72f1a2bf691db7b8352bae86b3951fdf9b23619b5d8586cb7cd1e9c2edc8ff9b", [:mix], [{:fss, "~> 0.1.0", [hex: :fss, repo: "hexpm", optional: false]}, {:nx, "~> 0.1", [hex: :nx, repo: "hexpm", optional: true]}, {:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: true]}, {:table, "~> 0.1.2", [hex: :table, repo: "hexpm", optional: false]}], "hexpm", "e1ec49a2ebbf622c1675f96b427c565ce02df6725e8f2e8d4a743c8e791bd090"},
   "makeup": {:hex, :makeup, "1.2.1", "e90ac1c65589ef354378def3ba19d401e739ee7ee06fb47f94c687016e3713d1", [:mix], [{:nimble_parsec, "~> 1.4", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "d36484867b0bae0fea568d10131197a4c2e47056a6fbe84922bf6ba71c8d17ce"},
   "makeup_elixir": {:hex, :makeup_elixir, "1.0.1", "e928a4f984e795e41e3abd27bfc09f51db16ab8ba1aebdba2b3a575437efafc2", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}, {:nimble_parsec, "~> 1.2.3 or ~> 1.3", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "7284900d412a3e5cfd97fdaed4f5ed389b8f2b4cb49efc0eb3bd10e2febf9507"},
-  "makeup_erlang": {:hex, :makeup_erlang, "1.0.1", "c7f58c120b2b5aa5fd80d540a89fdf866ed42f1f3994e4fe189abebeab610839", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm", "8a89a1eeccc2d798d6ea15496a6e4870b75e014d1af514b1b71fa33134f57814"},
-  "nimble_parsec": {:hex, :nimble_parsec, "1.4.0", "51f9b613ea62cfa97b25ccc2c1b4216e81df970acd8e16e8d1bdc58fef21370d", [:mix], [], "hexpm", "9c565862810fb383e9838c1dd2d7d2c437b3d13b267414ba6af33e50d2d1cf28"},
-  "sourceror": {:hex, :sourceror, "1.7.1", "599d78f4cc2be7d55c9c4fd0a8d772fd0478e3a50e726697c20d13d02aa056d4", [:mix], [], "hexpm", "cd6f268fe29fa00afbc535e215158680a0662b357dc784646d7dff28ac65a0fc"},
-  "statistex": {:hex, :statistex, "1.0.0", "f3dc93f3c0c6c92e5f291704cf62b99b553253d7969e9a5fa713e5481cd858a5", [:mix], [], "hexpm", "ff9d8bee7035028ab4742ff52fc80a2aa35cece833cf5319009b52f1b5a86c27"},
+  "makeup_erlang": {:hex, :makeup_erlang, "1.0.2", "03e1804074b3aa64d5fad7aa64601ed0fb395337b982d9bcf04029d68d51b6a7", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm", "af33ff7ef368d5893e4a267933e7744e46ce3cf1f61e2dccf53a111ed3aa3727"},
+  "nimble_parsec": {:hex, :nimble_parsec, "1.4.2", "8efba0122db06df95bfaa78f791344a89352ba04baedd3849593bfce4d0dc1c6", [:mix], [], "hexpm", "4b21398942dda052b403bbe1da991ccd03a053668d147d53fb8c4e0efe09c973"},
+  "sourceror": {:hex, :sourceror, "1.10.0", "38397dedbbc286966ec48c7af13e228b171332be1ad731974438c77791945ce9", [:mix], [], "hexpm", "29dbdfc92e04569c9d8e6efdc422fc1d815f4bd0055dc7c51b8800fb75c4b3f1"},
+  "statistex": {:hex, :statistex, "1.1.0", "7fec1eb2f580a0d2c1a05ed27396a084ab064a40cfc84246dbfb0c72a5c761e5", [:mix], [], "hexpm", "f5950ea26ad43246ba2cce54324ac394a4e7408fdcf98b8e230f503a0cba9cf5"},
   "table": {:hex, :table, "0.1.2", "87ad1125f5b70c5dea0307aa633194083eb5182ec537efc94e96af08937e14a8", [:mix], [], "hexpm", "7e99bc7efef806315c7e65640724bf165c3061cdc5d854060f74468367065029"},
   "text_diff": {:hex, :text_diff, "0.1.0", "1caf3175e11a53a9a139bc9339bd607c47b9e376b073d4571c031913317fecaa", [:mix], [], "hexpm", "d1ffaaecab338e49357b6daa82e435f877e0649041ace7755583a0ea3362dbd7"},
 }
diff --git a/test/rewrite_test.exs b/test/rewrite_test.exs
index 21521fc..3778c13 100644
--- a/test/rewrite_test.exs
+++ b/test/rewrite_test.exs
@@ -1111,6 +1111,15 @@ defmodule RewriteTest do
       assert Enum.slice(project, 1, 0) == []
     end
 
+    test "to_list/1" do
+      a = Source.from_string(":a", path: "a.exs")
+      b = Source.from_string(":b", path: "b.exs")
+      c = Source.from_string(":c", path: "c.exs")
+      {:ok, project} = Rewrite.from_sources([a, b, c])
+
+      assert Enum.to_list(project) == [a, b, c]
+    end
+
     test "member?/1 returns true" do
       project = Rewrite.new()
       project = Rewrite.new_source!(project, "a.ex", ":a")