Kounye a, REST API a te vin yon estanda pou devlopman aplikasyon entènèt, sa ki pèmèt devlopman yo dwe divize an pati endepandan. Plizyè kad popilè tankou Angular, React, Vue ak lòt yo kounye a yo itilize pou UI. Devlopè backend ka chwazi nan yon gran varyete lang ak kad. Jodi a mwen ta renmen pale sou yon kad tankou NestJS. Nou nan TestMace Nou aktivman itilize li pou pwojè entèn yo. Sèvi ak nich ak pake @nestjsx/crud, nou pral kreye yon aplikasyon CRUD senp.

Poukisa NestJS

Dènyèman, yon anpil nan kad backend te parèt nan kominote JavaScript la. Men, si an tèm de fonctionnalités yo bay kapasite ki sanble ak nich, Lè sa a, nan yon sèl bagay li definitivman ranport - sa a se achitekti la. Karakteristik NestJS sa yo pèmèt ou kreye aplikasyon endistriyèl ak devlopman echèl pou gwo ekip:

• lè l sèvi avèk TypeScript kòm lang prensipal devlopman. Malgre ke NestJS sipòte JavaScript, kèk fonksyonalite ka pa travay, espesyalman si nou ap pale de pakè twazyèm pati;
• prezans nan yon veso DI, ki pèmèt ou kreye eleman ki lach makonnen;
• Se fonksyonalite nan fondasyon an tèt li divize an konpozan endepandan entèrchanjabl. Pou egzanp, anba kapo a kòm yon fondasyon li ka itilize kòm ExpressAk rapidman, pou travay ak baz done a, nich soti nan bwat la bay Liaisons pou typeorm, mangou, sequelize;
• NestJS se agnostik platfòm epi li sipòte REST, GraphQL, Websockets, gRPC, elatriye.

Se fondasyon an tèt li enspire pa kad entèfas angilè a ak konseptyèlman gen anpil bagay an komen ak li.

Enstale NestJS ak deplwaye pwojè a

Nich gen yon pake nich/cli, ki pèmèt ou byen vit deplwaye yon fondasyon aplikasyon debaz. Ann enstale pake sa a globalman:

npm install --global @nest/cli

Apre enstalasyon, nou pral jenere fondasyon debaz aplikasyon nou an ak non an nich-rest. Sa a se fè lè l sèvi avèk kòmandman an nest new nest-rest.

nich nouvo nich-rès

dmitrii@dmitrii-HP-ZBook-17-G3:~/projects $ nest new nest-rest
  We will scaffold your app in a few seconds..

CREATE /nest-rest/.prettierrc (51 bytes)
CREATE /nest-rest/README.md (3370 bytes)
CREATE /nest-rest/nest-cli.json (84 bytes)
CREATE /nest-rest/nodemon-debug.json (163 bytes)
CREATE /nest-rest/nodemon.json (67 bytes)
CREATE /nest-rest/package.json (1805 bytes)
CREATE /nest-rest/tsconfig.build.json (97 bytes)
CREATE /nest-rest/tsconfig.json (325 bytes)
CREATE /nest-rest/tslint.json (426 bytes)
CREATE /nest-rest/src/app.controller.spec.ts (617 bytes)
CREATE /nest-rest/src/app.controller.ts (274 bytes)
CREATE /nest-rest/src/app.module.ts (249 bytes)
CREATE /nest-rest/src/app.service.ts (142 bytes)
CREATE /nest-rest/src/main.ts (208 bytes)
CREATE /nest-rest/test/app.e2e-spec.ts (561 bytes)
CREATE /nest-rest/test/jest-e2e.json (183 bytes)

? Which package manager would you ️ to use? yarn
 Installation in progress... 

  Successfully created project nest-rest
  Get started with the following commands:

$ cd nest-rest
$ yarn run start

                          Thanks for installing Nest 
                 Please consider donating to our open collective
                        to help us maintain this package.

                 Donate: https://opencollective.com/nest

Nou pral chwazi fil kòm manadjè pake nou an.
Nan pwen sa a ou ka kòmanse sèvè a ak lòd la npm start epi ale nan adrès la http://localhost:3000 ou ka wè paj prensipal la. Sepandan, se pa sa ki fè nou te rasanble isit la epi nou ap deplase sou.

Mete kanpe travay ak baz done a

Mwen te chwazi PostrgreSQL kòm DBMS pou atik sa a. Pa gen okenn diskisyon sou gou; nan opinyon mwen, sa a se DBMS ki pi matirite, ki gen tout kapasite ki nesesè yo. Kòm deja mansyone, Nest bay entegrasyon ak divès pakè pou travay ak baz done. Paske Depi chwa mwen te tonbe sou PostgreSQL, li ta lojik pou chwazi TypeORM kòm yon ORM. Ann enstale pakè ki nesesè yo pou entegrasyon ak baz done a:

yarn add typeorm @nestjs/typeorm pg

Nan lòd, ki sa chak pake ki nesesè pou:

1. typeorm - yon pake ki soti dirèkteman nan ORM nan tèt li;
2. @nestjs/typeorm - Pake TypeORM pou NestJS. Ajoute modil pou enpòte nan modil pwojè, osi byen ke yon seri dekoratè èd;
3. pg - chofè pou travay ak PostgreSQL.

Oke, pakè yo enstale, kounye a ou bezwen lanse baz done a tèt li. Pou deplwaye baz done a, mwen pral itilize docker-compose.yml ak kontni sa a:

docker-compose.yml

version: '3.1'

services:
  db:
    image: postgres:11.2
    restart: always
    environment:
      POSTGRES_PASSWORD: example
    volumes:
      - ../db:/var/lib/postgresql/data
      - ./postgresql.conf:/etc/postgresql/postgresql.conf
    ports:
      - 5432:5432
  adminer:
    image: adminer
    restart: always
    ports:
      - 8080:8080

Kòm ou ka wè, fichye sa a konfigure lansman 2 resipyan:

1. db se yon veso ki gen baz done dirèkteman. Nan ka nou an, yo itilize postgresql vèsyon 11.2;
2. adminer—manadjè baz done. Bay yon koòdone entènèt pou gade ak jere baz done a.

Pou travay ak koneksyon tcp, mwen te ajoute konfigirasyon sa a.

postgresql.conf

# -----------------------------
# PostgreSQL configuration file
# -----------------------------
#
# This file consists of lines of the form:
#
#   name = value
#
# (The "=" is optional.)  Whitespace may be used.  Comments are introduced with
# "#" anywhere on a line.  The complete list of parameter names and allowed
# values can be found in the PostgreSQL documentation.
#
# The commented-out settings shown in this file represent the default values.
# Re-commenting a setting is NOT sufficient to revert it to the default value;
# you need to reload the server.
#
# This file is read on server startup and when the server receives a SIGHUP
# signal.  If you edit the file on a running system, you have to SIGHUP the
# server for the changes to take effect, run "pg_ctl reload", or execute
# "SELECT pg_reload_conf()".  Some parameters, which are marked below,
# require a server shutdown and restart to take effect.
#
# Any parameter can also be given as a command-line option to the server, e.g.,
# "postgres -c log_connections=on".  Some parameters can be changed at run time
# with the "SET" SQL command.
#
# Memory units:  kB = kilobytes        Time units:  ms  = milliseconds
#                MB = megabytes                     s   = seconds
#                GB = gigabytes                     min = minutes
#                TB = terabytes                     h   = hours
#                                                   d   = days
#------------------------------------------------------------------------------
# FILE LOCATIONS
#------------------------------------------------------------------------------
# The default values of these variables are driven from the -D command-line
# option or PGDATA environment variable, represented here as ConfigDir.
#data_directory = 'ConfigDir'       # use data in another directory
# (change requires restart)
#hba_file = 'ConfigDir/pg_hba.conf' # host-based authentication file
# (change requires restart)
#ident_file = 'ConfigDir/pg_ident.conf' # ident configuration file
# (change requires restart)
# If external_pid_file is not explicitly set, no extra PID file is written.
#external_pid_file = ''         # write an extra PID file
# (change requires restart)
#------------------------------------------------------------------------------
# CONNECTIONS AND AUTHENTICATION
#------------------------------------------------------------------------------
# - Connection Settings -
listen_addresses = '*'
#listen_addresses = 'localhost'     # what IP address(es) to listen on;
# comma-separated list of addresses;
# defaults to 'localhost'; use '*' for all
# (change requires restart)
#port = 5432                # (change requires restart)
#max_connections = 100          # (change requires restart)
#superuser_reserved_connections = 3 # (change requires restart)
#unix_socket_directories = '/tmp'   # comma-separated list of directories
# (change requires restart)
#unix_socket_group = ''         # (change requires restart)
#unix_socket_permissions = 0777     # begin with 0 to use octal notation
# (change requires restart)
#bonjour = off              # advertise server via Bonjour
# (change requires restart)
#bonjour_name = ''          # defaults to the computer name
# (change requires restart)
# - TCP Keepalives -
# see "man 7 tcp" for details
#tcp_keepalives_idle = 0        # TCP_KEEPIDLE, in seconds;
# 0 selects the system default
#tcp_keepalives_interval = 0        # TCP_KEEPINTVL, in seconds;
# 0 selects the system default
#tcp_keepalives_count = 0       # TCP_KEEPCNT;
# 0 selects the system default
# - Authentication -
#authentication_timeout = 1min      # 1s-600s
#password_encryption = md5      # md5 or scram-sha-256
#db_user_namespace = off
# GSSAPI using Kerberos
#krb_server_keyfile = ''
#krb_caseins_users = off
# - SSL -
#ssl = off
#ssl_ca_file = ''
#ssl_cert_file = 'server.crt'
#ssl_crl_file = ''
#ssl_key_file = 'server.key'
#ssl_ciphers = 'HIGH:MEDIUM:+3DES:!aNULL' # allowed SSL ciphers
#ssl_prefer_server_ciphers = on
#ssl_ecdh_curve = 'prime256v1'
#ssl_min_protocol_version = 'TLSv1'
#ssl_max_protocol_version = ''
#ssl_dh_params_file = ''
#ssl_passphrase_command = ''
#ssl_passphrase_command_supports_reload = off
#------------------------------------------------------------------------------
# RESOURCE USAGE (except WAL)
#------------------------------------------------------------------------------
# - Memory -
#shared_buffers = 32MB          # min 128kB
# (change requires restart)
#huge_pages = try           # on, off, or try
# (change requires restart)
#temp_buffers = 8MB         # min 800kB
#max_prepared_transactions = 0      # zero disables the feature
# (change requires restart)
# Caution: it is not advisable to set max_prepared_transactions nonzero unless
# you actively intend to use prepared transactions.
#work_mem = 4MB             # min 64kB
#maintenance_work_mem = 64MB        # min 1MB
#autovacuum_work_mem = -1       # min 1MB, or -1 to use maintenance_work_mem
#max_stack_depth = 2MB          # min 100kB
#shared_memory_type = mmap      # the default is the first option
# supported by the operating system:
#   mmap
#   sysv
#   windows
# (change requires restart)
#dynamic_shared_memory_type = posix # the default is the first option
# supported by the operating system:
#   posix
#   sysv
#   windows
#   mmap
# (change requires restart)
# - Disk -
#temp_file_limit = -1           # limits per-process temp file space
# in kB, or -1 for no limit
# - Kernel Resources -
#max_files_per_process = 1000       # min 25
# (change requires restart)
# - Cost-Based Vacuum Delay -
#vacuum_cost_delay = 0          # 0-100 milliseconds (0 disables)
#vacuum_cost_page_hit = 1       # 0-10000 credits
#vacuum_cost_page_miss = 10     # 0-10000 credits
#vacuum_cost_page_dirty = 20        # 0-10000 credits
#vacuum_cost_limit = 200        # 1-10000 credits
# - Background Writer -
#bgwriter_delay = 200ms         # 10-10000ms between rounds
#bgwriter_lru_maxpages = 100        # max buffers written/round, 0 disables
#bgwriter_lru_multiplier = 2.0      # 0-10.0 multiplier on buffers scanned/round
#bgwriter_flush_after = 0       # measured in pages, 0 disables
# - Asynchronous Behavior -
#effective_io_concurrency = 1       # 1-1000; 0 disables prefetching
#max_worker_processes = 8       # (change requires restart)
#max_parallel_maintenance_workers = 2   # taken from max_parallel_workers
#max_parallel_workers_per_gather = 2    # taken from max_parallel_workers
#parallel_leader_participation = on
#max_parallel_workers = 8       # maximum number of max_worker_processes that
# can be used in parallel operations
#old_snapshot_threshold = -1        # 1min-60d; -1 disables; 0 is immediate
# (change requires restart)
#backend_flush_after = 0        # measured in pages, 0 disables
#------------------------------------------------------------------------------
# WRITE-AHEAD LOG
#------------------------------------------------------------------------------
# - Settings -
#wal_level = replica            # minimal, replica, or logical
# (change requires restart)
#fsync = on             # flush data to disk for crash safety
# (turning this off can cause
# unrecoverable data corruption)
#synchronous_commit = on        # synchronization level;
# off, local, remote_write, remote_apply, or on
#wal_sync_method = fsync        # the default is the first option
# supported by the operating system:
#   open_datasync
#   fdatasync (default on Linux)
#   fsync
#   fsync_writethrough
#   open_sync
#full_page_writes = on          # recover from partial page writes
#wal_compression = off          # enable compression of full-page writes
#wal_log_hints = off            # also do full page writes of non-critical updates
# (change requires restart)
#wal_buffers = -1           # min 32kB, -1 sets based on shared_buffers
# (change requires restart)
#wal_writer_delay = 200ms       # 1-10000 milliseconds
#wal_writer_flush_after = 1MB       # measured in pages, 0 disables
#commit_delay = 0           # range 0-100000, in microseconds
#commit_siblings = 5            # range 1-1000
# - Checkpoints -
#checkpoint_timeout = 5min      # range 30s-1d
#max_wal_size = 1GB
#min_wal_size = 80MB
#checkpoint_completion_target = 0.5 # checkpoint target duration, 0.0 - 1.0
#checkpoint_flush_after = 0     # measured in pages, 0 disables
#checkpoint_warning = 30s       # 0 disables
# - Archiving -
#archive_mode = off     # enables archiving; off, on, or always
# (change requires restart)
#archive_command = ''       # command to use to archive a logfile segment
# placeholders: %p = path of file to archive
#               %f = file name only
# e.g. 'test ! -f /mnt/server/archivedir/%f && cp %p /mnt/server/archivedir/%f'
#archive_timeout = 0        # force a logfile segment switch after this
# number of seconds; 0 disables
# - Archive Recovery -
# These are only used in recovery mode.
#restore_command = ''       # command to use to restore an archived logfile segment
# placeholders: %p = path of file to restore
#               %f = file name only
# e.g. 'cp /mnt/server/archivedir/%f %p'
# (change requires restart)
#archive_cleanup_command = ''   # command to execute at every restartpoint
#recovery_end_command = ''  # command to execute at completion of recovery
# - Recovery Target -
# Set these only when performing a targeted recovery.
#recovery_target = ''       # 'immediate' to end recovery as soon as a
# consistent state is reached
# (change requires restart)
#recovery_target_name = ''  # the named restore point to which recovery will proceed
# (change requires restart)
#recovery_target_time = ''  # the time stamp up to which recovery will proceed
# (change requires restart)
#recovery_target_xid = ''   # the transaction ID up to which recovery will proceed
# (change requires restart)
#recovery_target_lsn = ''   # the WAL LSN up to which recovery will proceed
# (change requires restart)
#recovery_target_inclusive = on # Specifies whether to stop:
# just after the specified recovery target (on)
# just before the recovery target (off)
# (change requires restart)
#recovery_target_timeline = 'latest'    # 'current', 'latest', or timeline ID
# (change requires restart)
#recovery_target_action = 'pause'   # 'pause', 'promote', 'shutdown'
# (change requires restart)
#------------------------------------------------------------------------------
# REPLICATION
#------------------------------------------------------------------------------
# - Sending Servers -
# Set these on the master and on any standby that will send replication data.
#max_wal_senders = 10       # max number of walsender processes
# (change requires restart)
#wal_keep_segments = 0      # in logfile segments; 0 disables
#wal_sender_timeout = 60s   # in milliseconds; 0 disables
#max_replication_slots = 10 # max number of replication slots
# (change requires restart)
#track_commit_timestamp = off   # collect timestamp of transaction commit
# (change requires restart)
# - Master Server -
# These settings are ignored on a standby server.
#synchronous_standby_names = '' # standby servers that provide sync rep
# method to choose sync standbys, number of sync standbys,
# and comma-separated list of application_name
# from standby(s); '*' = all
#vacuum_defer_cleanup_age = 0   # number of xacts by which cleanup is delayed
# - Standby Servers -
# These settings are ignored on a master server.
#primary_conninfo = ''          # connection string to sending server
# (change requires restart)
#primary_slot_name = ''         # replication slot on sending server
# (change requires restart)
#promote_trigger_file = ''      # file name whose presence ends recovery
#hot_standby = on           # "off" disallows queries during recovery
# (change requires restart)
#max_standby_archive_delay = 30s    # max delay before canceling queries
# when reading WAL from archive;
# -1 allows indefinite delay
#max_standby_streaming_delay = 30s  # max delay before canceling queries
# when reading streaming WAL;
# -1 allows indefinite delay
#wal_receiver_status_interval = 10s # send replies at least this often
# 0 disables
#hot_standby_feedback = off     # send info from standby to prevent
# query conflicts
#wal_receiver_timeout = 60s     # time that receiver waits for
# communication from master
# in milliseconds; 0 disables
#wal_retrieve_retry_interval = 5s   # time to wait before retrying to
# retrieve WAL after a failed attempt
#recovery_min_apply_delay = 0       # minimum delay for applying changes during recovery
# - Subscribers -
# These settings are ignored on a publisher.
#max_logical_replication_workers = 4    # taken from max_worker_processes
# (change requires restart)
#max_sync_workers_per_subscription = 2  # taken from max_logical_replication_workers
#------------------------------------------------------------------------------
# QUERY TUNING
#------------------------------------------------------------------------------
# - Planner Method Configuration -
#enable_bitmapscan = on
#enable_hashagg = on
#enable_hashjoin = on
#enable_indexscan = on
#enable_indexonlyscan = on
#enable_material = on
#enable_mergejoin = on
#enable_nestloop = on
#enable_parallel_append = on
#enable_seqscan = on
#enable_sort = on
#enable_tidscan = on
#enable_partitionwise_join = off
#enable_partitionwise_aggregate = off
#enable_parallel_hash = on
#enable_partition_pruning = on
# - Planner Cost Constants -
#seq_page_cost = 1.0            # measured on an arbitrary scale
#random_page_cost = 4.0         # same scale as above
#cpu_tuple_cost = 0.01          # same scale as above
#cpu_index_tuple_cost = 0.005       # same scale as above
#cpu_operator_cost = 0.0025     # same scale as above
#parallel_tuple_cost = 0.1      # same scale as above
#parallel_setup_cost = 1000.0   # same scale as above
#jit_above_cost = 100000        # perform JIT compilation if available
# and query more expensive than this;
# -1 disables
#jit_inline_above_cost = 500000     # inline small functions if query is
# more expensive than this; -1 disables
#jit_optimize_above_cost = 500000   # use expensive JIT optimizations if
# query is more expensive than this;
# -1 disables
#min_parallel_table_scan_size = 8MB
#min_parallel_index_scan_size = 512kB
#effective_cache_size = 4GB
# - Genetic Query Optimizer -
#geqo = on
#geqo_threshold = 12
#geqo_effort = 5            # range 1-10
#geqo_pool_size = 0         # selects default based on effort
#geqo_generations = 0           # selects default based on effort
#geqo_selection_bias = 2.0      # range 1.5-2.0
#geqo_seed = 0.0            # range 0.0-1.0
# - Other Planner Options -
#default_statistics_target = 100    # range 1-10000
#constraint_exclusion = partition   # on, off, or partition
#cursor_tuple_fraction = 0.1        # range 0.0-1.0
#from_collapse_limit = 8
#join_collapse_limit = 8        # 1 disables collapsing of explicit
# JOIN clauses
#force_parallel_mode = off
#jit = on               # allow JIT compilation
#plan_cache_mode = auto         # auto, force_generic_plan or
# force_custom_plan
#------------------------------------------------------------------------------
# REPORTING AND LOGGING
#------------------------------------------------------------------------------
# - Where to Log -
#log_destination = 'stderr'     # Valid values are combinations of
# stderr, csvlog, syslog, and eventlog,
# depending on platform.  csvlog
# requires logging_collector to be on.
# This is used when logging to stderr:
#logging_collector = off        # Enable capturing of stderr and csvlog
# into log files. Required to be on for
# csvlogs.
# (change requires restart)
# These are only used if logging_collector is on:
#log_directory = 'log'          # directory where log files are written,
# can be absolute or relative to PGDATA
#log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log'    # log file name pattern,
# can include strftime() escapes
#log_file_mode = 0600           # creation mode for log files,
# begin with 0 to use octal notation
#log_truncate_on_rotation = off     # If on, an existing log file with the
# same name as the new log file will be
# truncated rather than appended to.
# But such truncation only occurs on
# time-driven rotation, not on restarts
# or size-driven rotation.  Default is
# off, meaning append to existing files
# in all cases.
#log_rotation_age = 1d          # Automatic rotation of logfiles will
# happen after that time.  0 disables.
#log_rotation_size = 10MB       # Automatic rotation of logfiles will
# happen after that much log output.
# 0 disables.
# These are relevant when logging to syslog:
#syslog_facility = 'LOCAL0'
#syslog_ident = 'postgres'
#syslog_sequence_numbers = on
#syslog_split_messages = on
# This is only relevant when logging to eventlog (win32):
# (change requires restart)
#event_source = 'PostgreSQL'
# - When to Log -
#log_min_messages = warning     # values in order of decreasing detail:
#   debug5
#   debug4
#   debug3
#   debug2
#   debug1
#   info
#   notice
#   warning
#   error
#   log
#   fatal
#   panic
#log_min_error_statement = error    # values in order of decreasing detail:
#   debug5
#   debug4
#   debug3
#   debug2
#   debug1
#   info
#   notice
#   warning
#   error
#   log
#   fatal
#   panic (effectively off)
#log_min_duration_statement = -1    # logs statements and their durations
# according to log_statement_sample_rate. -1 is disabled,
# 0 logs all statement, > 0 logs only statements running at
# least this number of milliseconds.
#log_statement_sample_rate = 1  # Fraction of logged statements over
# log_min_duration_statement. 1.0 logs all statements,
# 0 never logs.
# - What to Log -
#debug_print_parse = off
#debug_print_rewritten = off
#debug_print_plan = off
#debug_pretty_print = on
#log_checkpoints = off
#log_connections = off
#log_disconnections = off
#log_duration = off
#log_error_verbosity = default      # terse, default, or verbose messages
#log_hostname = off
#log_line_prefix = '%m [%p] '       # special values:
#   %a = application name
#   %u = user name
#   %d = database name
#   %r = remote host and port
#   %h = remote host
#   %p = process ID
#   %t = timestamp without milliseconds
#   %m = timestamp with milliseconds
#   %n = timestamp with milliseconds (as a Unix epoch)
#   %i = command tag
#   %e = SQL state
#   %c = session ID
#   %l = session line number
#   %s = session start timestamp
#   %v = virtual transaction ID
#   %x = transaction ID (0 if none)
#   %q = stop here in non-session
#        processes
#   %% = '%'
# e.g. '<%u%%%d> '
#log_lock_waits = off           # log lock waits >= deadlock_timeout
#log_statement = 'none'         # none, ddl, mod, all
#log_replication_commands = off
#log_temp_files = -1            # log temporary files equal or larger
# than the specified size in kilobytes;
# -1 disables, 0 logs all temp files
#log_timezone = 'GMT'
#------------------------------------------------------------------------------
# PROCESS TITLE
#------------------------------------------------------------------------------
#cluster_name = ''          # added to process titles if nonempty
# (change requires restart)
#update_process_title = on
#------------------------------------------------------------------------------
# STATISTICS
#------------------------------------------------------------------------------
# - Query and Index Statistics Collector -
#track_activities = on
#track_counts = on
#track_io_timing = off
#track_functions = none         # none, pl, all
#track_activity_query_size = 1024   # (change requires restart)
#stats_temp_directory = 'pg_stat_tmp'
# - Monitoring -
#log_parser_stats = off
#log_planner_stats = off
#log_executor_stats = off
#log_statement_stats = off
#------------------------------------------------------------------------------
# AUTOVACUUM
#------------------------------------------------------------------------------
#autovacuum = on            # Enable autovacuum subprocess?  'on'
# requires track_counts to also be on.
#log_autovacuum_min_duration = -1   # -1 disables, 0 logs all actions and
# their durations, > 0 logs only
# actions running at least this number
# of milliseconds.
#autovacuum_max_workers = 3     # max number of autovacuum subprocesses
# (change requires restart)
#autovacuum_naptime = 1min      # time between autovacuum runs
#autovacuum_vacuum_threshold = 50   # min number of row updates before
# vacuum
#autovacuum_analyze_threshold = 50  # min number of row updates before
# analyze
#autovacuum_vacuum_scale_factor = 0.2   # fraction of table size before vacuum
#autovacuum_analyze_scale_factor = 0.1  # fraction of table size before analyze
#autovacuum_freeze_max_age = 200000000  # maximum XID age before forced vacuum
# (change requires restart)
#autovacuum_multixact_freeze_max_age = 400000000    # maximum multixact age
# before forced vacuum
# (change requires restart)
#autovacuum_vacuum_cost_delay = 2ms # default vacuum cost delay for
# autovacuum, in milliseconds;
# -1 means use vacuum_cost_delay
#autovacuum_vacuum_cost_limit = -1  # default vacuum cost limit for
# autovacuum, -1 means use
# vacuum_cost_limit
#------------------------------------------------------------------------------
# CLIENT CONNECTION DEFAULTS
#------------------------------------------------------------------------------
# - Statement Behavior -
#client_min_messages = notice       # values in order of decreasing detail:
#   debug5
#   debug4
#   debug3
#   debug2
#   debug1
#   log
#   notice
#   warning
#   error
#search_path = '"$user", public'    # schema names
#row_security = on
#default_tablespace = ''        # a tablespace name, '' uses the default
#temp_tablespaces = ''          # a list of tablespace names, '' uses
# only default tablespace
#check_function_bodies = on
#default_transaction_isolation = 'read committed'
#default_transaction_read_only = off
#default_transaction_deferrable = off
#session_replication_role = 'origin'
#statement_timeout = 0          # in milliseconds, 0 is disabled
#lock_timeout = 0           # in milliseconds, 0 is disabled
#idle_in_transaction_session_timeout = 0    # in milliseconds, 0 is disabled
#vacuum_freeze_min_age = 50000000
#vacuum_freeze_table_age = 150000000
#vacuum_multixact_freeze_min_age = 5000000
#vacuum_multixact_freeze_table_age = 150000000
#vacuum_cleanup_index_scale_factor = 0.1    # fraction of total number of tuples
# before index cleanup, 0 always performs
# index cleanup
#bytea_output = 'hex'           # hex, escape
#xmlbinary = 'base64'
#xmloption = 'content'
#gin_fuzzy_search_limit = 0
#gin_pending_list_limit = 4MB
# - Locale and Formatting -
#datestyle = 'iso, mdy'
#intervalstyle = 'postgres'
#timezone = 'GMT'
#timezone_abbreviations = 'Default'     # Select the set of available time zone
# abbreviations.  Currently, there are
#   Default
#   Australia (historical usage)
#   India
# You can create your own file in
# share/timezonesets/.
#extra_float_digits = 1         # min -15, max 3; any value >0 actually
# selects precise output mode
#client_encoding = sql_ascii        # actually, defaults to database
# encoding
# These settings are initialized by initdb, but they can be changed.
#lc_messages = 'C'          # locale for system error message
# strings
#lc_monetary = 'C'          # locale for monetary formatting
#lc_numeric = 'C'           # locale for number formatting
#lc_time = 'C'              # locale for time formatting
# default configuration for text search
#default_text_search_config = 'pg_catalog.simple'
# - Shared Library Preloading -
#shared_preload_libraries = ''  # (change requires restart)
#local_preload_libraries = ''
#session_preload_libraries = ''
#jit_provider = 'llvmjit'       # JIT library to use
# - Other Defaults -
#dynamic_library_path = '$libdir'
#------------------------------------------------------------------------------
# LOCK MANAGEMENT
#------------------------------------------------------------------------------
#deadlock_timeout = 1s
#max_locks_per_transaction = 64     # min 10
# (change requires restart)
#max_pred_locks_per_transaction = 64    # min 10
# (change requires restart)
#max_pred_locks_per_relation = -2   # negative values mean
# (max_pred_locks_per_transaction
#  / -max_pred_locks_per_relation) - 1
#max_pred_locks_per_page = 2            # min 0
#------------------------------------------------------------------------------
# VERSION AND PLATFORM COMPATIBILITY
#------------------------------------------------------------------------------
# - Previous PostgreSQL Versions -
#array_nulls = on
#backslash_quote = safe_encoding    # on, off, or safe_encoding
#escape_string_warning = on
#lo_compat_privileges = off
#operator_precedence_warning = off
#quote_all_identifiers = off
#standard_conforming_strings = on
#synchronize_seqscans = on
# - Other Platforms and Clients -
#transform_null_equals = off
#------------------------------------------------------------------------------
# ERROR HANDLING
#------------------------------------------------------------------------------
#exit_on_error = off            # terminate session on any error?
#restart_after_crash = on       # reinitialize after backend crash?
#data_sync_retry = off          # retry or panic on failure to fsync
# data?
# (change requires restart)
#------------------------------------------------------------------------------
# CONFIG FILE INCLUDES
#------------------------------------------------------------------------------
# These options allow settings to be loaded from files other than the
# default postgresql.conf.
#include_dir = 'conf.d'         # include files ending in '.conf' from
# directory 'conf.d'
#include_if_exists = 'exists.conf'  # include file only if it exists
#include = 'special.conf'       # include file
#------------------------------------------------------------------------------
# CUSTOMIZED OPTIONS
#------------------------------------------------------------------------------
# Add settings for extensions here

Sa a tout, ou ka kòmanse resipyan ak lòd la docker-compose up -d. Oswa nan yon konsole separe ak lòd la docker-compose up.

Se konsa, pakè yo te enstale, baz done a te lanse, tout sa ki rete se fè yo zanmi youn ak lòt. Pou fè sa, ou bezwen ajoute dosye sa a nan rasin pwojè a: ormconfig.js:

ormconfig.js

const process = require('process');
const username = process.env.POSTGRES_USER || "postgres";
const password = process.env.POSTGRES_PASSWORD || "example";
module.exports = {
"type": "postgres",
"host": "localhost",
"port": 5432,
username,
password,
"database": "postgres",
"synchronize": true,
"dropSchema": false,
"logging": true,
"entities": [__dirname + "/src/**/*.entity.ts", __dirname + "/dist/**/*.entity.js"],
"migrations": ["migrations/**/*.ts"],
"subscribers": ["subscriber/**/*.ts", "dist/subscriber/**/.js"],
"cli": {
"entitiesDir": "src",
"migrationsDir": "migrations",
"subscribersDir": "subscriber"
}
}

Konfigirasyon sa a pral itilize pou cli typeorm.

Ann gade nan konfigirasyon sa a an plis detay. Sou liy 3 ak 4 nou jwenn non itilizatè a ak modpas nan varyab anviwònman yo. Sa a se pratik lè ou gen plizyè anviwònman (dev, etap, prod, elatriye). Pa default, non itilizatè a se postgres ak modpas la se egzanp. Rès konfigirasyon an se trivial, kidonk nou pral konsantre sèlman sou paramèt ki pi enteresan:

• senkronize - Endike si yo ta dwe otomatikman kreye chema baz done a lè aplikasyon an kòmanse. Fè atansyon ak opsyon sa a epi pa sèvi ak li nan pwodiksyon, otreman ou pral pèdi done yo. Opsyon sa a se pratik lè w ap devlope ak debogaj yon aplikasyon. Kòm yon altènativ a opsyon sa a, ou ka itilize kòmandman an schema:sync soti nan CLI TypeORM.
• dropSchema - Reyajiste chema a chak fwa yo etabli yon koneksyon. Jis tankou yon sèl anvan an, opsyon sa a ta dwe itilize sèlman pandan devlopman ak debogaj aplikasyon an.
• antite - ki chemen pou chèche deskripsyon modèl yo. Tanpri sonje ke rechèch pa mask sipòte.
• cli.entitiesDir se anyè kote modèl ki te kreye nan CLI TypeORM yo ta dwe estoke pa default.

Pou nou kapab itilize tout karakteristik TypeORM nan aplikasyon Nest nou an, nou bezwen enpòte modil la. TypeOrmModule в AppModule. Moun sa yo. ou AppModule pral sanble sa a:

app.module.ts

import { Module } from '@nestjs/common';
import { AppController } from './app.controller';
import { AppService } from './app.service';
import { TypeOrmModule } from '@nestjs/typeorm';
import * as process from "process";
const username = process.env.POSTGRES_USER || 'postgres';
const password = process.env.POSTGRES_PASSWORD || 'example';
@Module({
imports: [
TypeOrmModule.forRoot({
type: 'postgres',
host: 'localhost',
port: 5432,
username,
password,
database: 'postgres',
entities: [__dirname + '/**/*.entity{.ts,.js}'],
synchronize: true,
}),
],
controllers: [AppController],
providers: [AppService],
})
export class AppModule {}

Kòm ou ka remake, metòd la forRoot se menm konfigirasyon an pou travay ak baz done a transfere tankou nan dosye a ormconfig.ts

Touch final la rete - ajoute plizyè travay pou travay ak TypeORM nan package.json. Reyalite a se ke CLI a ekri nan javascript epi li kouri nan anviwònman an nodejs. Sepandan, tout modèl nou yo ak migrasyon yo pral ekri nan tape. Se poutèt sa, li nesesè transpilate migrasyon nou yo ak modèl anvan ou sèvi ak CLI la. Pou sa nou bezwen pake a ts-node:

yarn add -D ts-node

Apre sa, ajoute kòmandman ki nesesè yo nan package.json:

"typeorm": "ts-node -r tsconfig-paths/register ./node_modules/typeorm/cli.js",
"migration:generate": "yarn run typeorm migration:generate -n",
"migration:create": "yarn run typeorm migration:create -n",
"migration:run": "yarn run typeorm migration:run"

Premye kòmandman an, typeorm, ajoute yon wrapper ts-node pou kouri TypeORM cli a. Kòmandman ki rete yo se rakoursi pratik ke ou, kòm yon pwomotè, pral itilize prèske chak jou:
migration:generate — kreye migrasyon ki baze sou chanjman nan modèl ou yo.
migration:create — kreye yon migrasyon vid.
migration:run - lanse migrasyon yo.
Oke, se li kounye a, nou te ajoute pakè ki nesesè yo, konfigirasyon aplikasyon an pou travay ak baz done a tou de soti nan cli a ak nan aplikasyon an tèt li, epi tou li te lanse DBMS la. Li lè pou nou ajoute lojik nan aplikasyon nou an.

Enstale pakè pou kreye CRUD

Sèvi ak Nest sèlman, ou ka kreye yon API ki pèmèt ou kreye, li, mete ajou, ak efase yon antite. Solisyon sa a pral fleksib ke posib, men nan kèk ka li pral redondants. Pou egzanp, si ou bezwen byen vit kreye yon pwototip, ou ka souvan sakrifye fleksibilite pou vitès nan devlopman. Anpil kad bay fonksyonalite pou jenere CRUD lè yo dekri modèl done yon sèten antite. Ak Nich pa gen okenn eksepsyon! Se pakè a bay fonksyonalite sa a @nestjsx/crud. Kapasite li yo trè enteresan:

• enstalasyon fasil ak konfigirasyon;
• DBMS endepandans;
• langaj rekèt pwisan ak kapasite pou filtre, paj, sòt, chaje relasyon ak antite enbrike, kachèt, elatriye;
• pake pou jenere demann sou front-end la;
• fasil depase metòd kontwolè;
• ti konfigirasyon;
• swagger dokiman sipò.

Se fonksyonalite a divize an plizyè pakè:

• @nestjsx/crud - pake debaz ke dekoratè a bay Crud() pou jenerasyon wout, konfigirasyon ak validation;
• @nestjsx/crud-request — yon pake ki bay yon rechèch builder/parser pou itilize sou bò frontend;
• @nestjsx/crud-typeorm — yon pake pou entegrasyon ak TypeORM, bay sèvis debaz TypeOrmCrudService ak metòd CRUD pou travay ak antite nan baz done a.

Nan leson patikilye sa a nou pral bezwen pakè nichjsx/crud ak nichjsx/crud-typeorm. Premyèman, ann mete yo

yarn add @nestjsx/crud class-transformer class-validator

Pakè klas-transfòmatè и klas-validator nan aplikasyon sa a yo mande pou yon deskripsyon deklaratif règ yo pou transfòme egzanp modèl ak validation demann fèk ap rantre, respektivman. Pakè sa yo soti nan menm otè a, kidonk interfaces yo sanble.

Aplikasyon dirèk nan CRUD

Nou pral pran yon lis itilizatè kòm yon modèl egzanp. Itilizatè yo pral gen jaden sa yo: id, username, displayName, email. id - jaden oto-enkreman, email и username - jaden inik. Li senp! Tout sa ki rete se aplike lide nou an nan fòm yon aplikasyon Nest.
Premye ou bezwen kreye yon modil users, ki moun ki pral responsab pou travay ak itilizatè yo. Ann sèvi ak cli ki soti nan NestJS epi egzekite kòmandman an nan anyè rasin pwojè nou an nest g module users.

itilizatè modil nich g

dmitrii@dmitrii-HP-ZBook-17-G3:~/projects/nest-rest git:(master*)$ nest g module users
CREATE /src/users/users.module.ts (82 bytes)
UPDATE /src/app.module.ts (312 bytes)

Nan modil sa a nou pral ajoute yon katab antite, kote nou pral gen modèl modil sa a. An patikilye, ann ajoute isit la fichye user.entity.ts ak yon deskripsyon modèl itilizatè a:

user.entity.ts

import { Column, Entity, PrimaryGeneratedColumn } from 'typeorm';
@Entity()
export class User {
@PrimaryGeneratedColumn()
id: string;
@Column({unique: true})
email: string;
@Column({unique: true})
username: string;
@Column({nullable: true})
displayName: string;
}

Pou aplikasyon nou an ka "wè" modèl sa a, li nesesè nan modil la UsersModule enpòte TypeOrmModule kontni sa a:

users.module.ts

import { Module } from '@nestjs/common';
import { UsersController } from './controllers/users/users.controller';
import { UsersService } from './services/users/users.service';
import { TypeOrmModule } from '@nestjs/typeorm';
import { User } from './entities/user.entity';
@Module({
controllers: [UsersController],
providers: [UsersService],
imports: [
TypeOrmModule.forFeature([User])
]
})
export class UsersModule {}

Sa vle di, isit la nou enpòte TypeOrmModule, kote kòm yon paramèt metòd forFeature Nou endike yon lis modèl ki gen rapò ak modil sa a.

Tout sa ki rete se kreye antite ki koresponn lan nan baz done a. Mekanis migrasyon an sèvi pou rezon sa yo. Pou kreye yon migrasyon ki baze sou chanjman nan modèl, ou bezwen kouri lòd la npm run migration:generate -- CreateUserTable:

Tit spoiler

$ npm run migration:generate -- CreateUserTable
Migration /home/dmitrii/projects/nest-rest/migrations/1563346135367-CreateUserTable.ts has been generated successfully.
Done in 1.96s.

Nou pa t 'gen ekri migrasyon an manyèlman, tout bagay te rive majik. Eske se pa yon mirak! Sepandan, sa a se pa tout. Ann pran yon gade nan dosye migrasyon kreye a:

1563346135367-CreateUserTable.ts

import {MigrationInterface, QueryRunner} from "typeorm";
export class CreateUserTable1563346816726 implements MigrationInterface {
public async up(queryRunner: QueryRunner): Promise<any> {
await queryRunner.query(`CREATE TABLE "user" ("id" SERIAL NOT NULL, "email" character varying NOT NULL, "username" character varying NOT NULL, "displayName" character varying, CONSTRAINT "UQ_e12875dfb3b1d92d7d7c5377e22" UNIQUE ("email"), CONSTRAINT "UQ_78a916df40e02a9deb1c4b75edb" UNIQUE ("username"), CONSTRAINT "PK_cace4a159ff9f2512dd42373760" PRIMARY KEY ("id"))`);
}
public async down(queryRunner: QueryRunner): Promise<any> {
await queryRunner.query(`DROP TABLE "user"`);
}
}

Kòm ou ka wè, se pa sèlman metòd la pou kòmanse migrasyon an te pwodwi otomatikman, men tou, metòd la pou woule tounen li. Kokenn!
Tout sa ki rete se woule soti migrasyon sa a. Sa a se fè ak lòd sa a:

npm run migration:run.

Sa a li, kounye a chanjman yo chema te imigre nan baz done a.
Apre sa, nou pral kreye yon sèvis ki pral responsab pou travay ak itilizatè yo epi eritye li de TypeOrmCrudService. Repozitwa antite enterè a dwe pase nan paramèt konstrukteur paran an, nan ka nou an. User depo.

itilizatè.service.ts

import { Injectable } from '@nestjs/common';
import { TypeOrmCrudService } from '@nestjsx/crud-typeorm';
import { User } from '../../entities/user.entity';
import { InjectRepository } from '@nestjs/typeorm';
import { Repository } from 'typeorm';
@Injectable()
export class UsersService extends TypeOrmCrudService<User>{
constructor(@InjectRepository(User) usersRepository: Repository<User>){
super(usersRepository);
}
}

Nou pral bezwen sèvis sa a nan kontwolè a users. Pou kreye yon kontwolè, tape nan konsole a nest g controller users/controllers/users

nich g kontwolè itilizatè/kontwolè/itilizatè yo

dmitrii@dmitrii-HP-ZBook-17-G3:~/projects/nest-rest git:(master*)$ nest g controller users/controllers/users
CREATE /src/users/controllers/users/users.controller.spec.ts (486 bytes)
CREATE /src/users/controllers/users/users.controller.ts (99 bytes)
UPDATE /src/users/users.module.ts (188 bytes)

Ann louvri kontwolè sa a epi modifye li pou ajoute yon ti maji nichjsx/crud. Pou chak klas UsersController Ann ajoute yon dekoratè tankou sa a:

@Crud({
model: {
type: User
}
})

Crud se yon dekoratè ki ajoute nan kontwolè a metòd ki nesesè pou travay ak modèl la. Kalite modèl la endike nan jaden an model.type konfigirasyon dekoratè.
Dezyèm etap la se aplike koòdone a CrudController<User>. Kòd kontwolè "Assemble" sanble sa a:

import { Controller } from '@nestjs/common';
import { Crud, CrudController } from '@nestjsx/crud';
import { User } from '../../entities/user.entity';
import { UsersService } from '../../services/users/users.service';
@Crud({
model: {
type: User
}
})
@Controller('users')
export class UsersController implements CrudController<User>{
constructor(public service: UsersService){}
}

Epi se tout! Koulye a, kontwolè a sipòte tout seri operasyon ak modèl la! pa kwè mwen? Ann eseye aplikasyon nou an an aksyon!

Kreye yon script rechèch nan TestMace

Pou teste sèvis nou an, nou pral sèvi ak yon IDE pou travay avèk API a TestMace. Poukisa TestMace? Konpare ak pwodwi menm jan an, li gen avantaj sa yo:

• travay pwisan ak varyab. Nan moman sa a, gen plizyè kalite varyab, chak nan yo jwe yon wòl espesifik: varyab entegre, varyab dinamik, varyab anviwònman. Chak varyab fè pati yon ne ak sipò pou mekanis eritaj la;
• Fasil kreye scripts san yo pa pwogramasyon. Sa a pral diskite anba a;
• yon fòma moun lizib ki pèmèt ou sove pwojè a nan sistèm kontwòl vèsyon;
• autocompletion, en sentaks, en valè varyab;
• Sipò deskripsyon API ak kapasite pou enpòte soti nan Swagger.

Ann kòmanse sèvè nou an ak lòd la npm start epi eseye jwenn aksè nan lis itilizatè yo. Lis itilizatè yo, jije pa konfigirasyon kontwolè nou an, ou ka jwenn nan url localhost:3000/users. Ann fè yon demann nan adrès sa a.
Apre ou fin kouri TestMace ou ka wè yon koòdone tankou sa a:

Anlè gòch la se yon pye bwa pwojè ak yon ne rasin Pwojè. Ann eseye kreye premye demann pou jwenn yon lis itilizatè yo. Pou sa nou pral kreye RequestStep ne Sa a se fè nan meni an kontèks nan ne la Pwojè Ajoute ne -> RequestStep.

Nan jaden URL la, kole localhost:3000/users epi kouri demann lan. Nou pral resevwa kòd 200 ak yon etalaj vid nan kò repons lan. Li konprann, nou poko ajoute pèsonn.
Ann kreye yon script ki pral gen ladan etap sa yo:

1. kreye yon itilizatè;
2. demann idantifikasyon itilizatè ki fèk kreye a;
3. efase pa id itilizatè ki te kreye nan etap 1.

Donk, ann ale. Pou konvenyans, se pou yo kreye yon ne tankou Dosye. Esansyèlman, sa a se jis yon katab kote nou pral sove script la tout antye. Pou kreye yon ne Dosye, chwazi Pwojè nan meni kontèks ne la Ajoute ne -> Dosye. Ann rele ne la tcheke-kreye. Anndan yon ne tcheke-kreye Ann kreye premye demann nou an pou kreye yon itilizatè. Ann rele ne ki fèk kreye kreye-itilizatè. Sa vle di, nan moman sa a yerachi a ne pral sanble tankou sa a:

Ann ale nan tab la louvri kreye-itilizatè ne. Ann antre paramèt sa yo pou demann lan:

• Kalite demann - POST
• URL - localhost:3000/itilizatè
• Kò - JSON ak valè {"email": "[email protected]", "displayName": "New user", "username": "user"}

Ann ranpli demann sa a. Aplikasyon nou an di ke dosye a te kreye.

Oke, ann tcheke reyalite sa a. Yo nan lòd yo opere ak id itilizatè a kreye nan etap ki vin apre, paramèt sa a dwe sove. Mekanis la pafè pou sa. varyab dinamik. Ann sèvi ak egzanp nou an pou nou gade kijan pou nou travay avèk yo. Nan tab la analize nan repons lan, akote ne idantite a nan meni an kontèks, chwazi atik la Bay varyab. Nan bwat dyalòg la ou dwe mete paramèt sa yo:

• Node - nan kilès nan zansèt yo kreye yon varyab dinamik. Ann chwazi tcheke-kreye
• Non varyab - non varyab sa a. Ann rele userId.

Men ki jan pwosesis pou kreye yon varyab dinamik sanble:

Kounye a, chak fwa yo egzekite rechèch sa a, yo pral mete ajou valè varyab dinamik la. Epi paske varyab dinamik sipòte mekanis nan eritaj yerarchize, varyab userId ap disponib nan desandan tcheke-kreye ne nan nenpòt nivo nidifikasyon.
Varyab sa a pral itil nou nan pwochen demann lan. Savwa, nou pral mande itilizatè a ki fèk kreye. Kòm yon timoun nan yon ne tcheke-kreye nou pral kreye yon demann tcheke-si egziste ak paramèt url egal localhost:3000/users/${$dynamicVar.userId}. Gade konsepsyon ${variable_name} sa ap resevwa valè yon varyab. Paske Nou gen yon varyab dinamik, kidonk jwenn li ou bezwen jwenn aksè nan objè a $dynamicVar, sa vle di konplètman aksè nan yon varyab dinamik userId pral sanble sa a ${$dynamicVar.userId}. Ann egzekite demann lan epi asire w ke done yo mande kòrèkteman.
Dènye etap ki rete a se pou mande sipresyon. Nou bezwen li pa sèlman tcheke operasyon an nan sipresyon an, men tou, pou nou pale, netwaye apre tèt nou nan baz done a, paske Jaden imèl ak non itilizatè yo inik. Se konsa, nan ne chèk-kreye nou pral kreye yon demann efase itilizatè ak paramèt sa yo

• Kalite demann - DELETE
• URL - localhost:3000/users/${$dynamicVar.userId}

Ann lanse. Nou tann. Nou jwi rezilta a)

Oke, kounye a nou ka kouri tout script sa a nenpòt ki lè. Pou kouri script la ou bezwen chwazi nan meni kontèks la tcheke-kreye atik ne kouri.

Nœuds yo nan script la pral egzekite youn apre lòt
Ou ka sove script sa a nan pwojè ou a pa kouri File -> Sove pwojè.

Konklizyon

Tout karakteristik yo nan zouti yo itilize tou senpleman pa t 'kapab anfòm nan fòma atik sa a. Kòm pou koupab prensipal la - pake a nichjsx/crud - sijè sa yo rete dekouvri:

• validasyon koutim ak transfòmasyon nan modèl;
• pwisan lang rechèch ak itilizasyon pratik li nan devan an;
• redefini ak ajoute nouvo metòd pou contrôleur crud;
• sipò swagger;
• jesyon kachèt.

Sepandan, menm sa ki dekri nan atik la ase pou konprann ke menm yon fondasyon antrepriz tankou NestJS gen zouti pou pwototip aplikasyon rapid. Ak tankou yon IDE fre tankou TestMace pèmèt ou kenbe yon vitès bay.

Kòd sous pou atik sa a, ansanm ak pwojè a TestMace, disponib nan depo a https://github.com/TestMace/nest-rest. Pou louvri yon pwojè TestMace jis fè li nan app a File -> Louvri pwojè.

Sous: www.habr.com